From 5a5331537c3fa89ac1a553e101997e945ce97bc0 Mon Sep 17 00:00:00 2001
From: Andrea Censi <acensi@ethz.ch>
Date: Mon, 21 Feb 2022 12:22:37 +0100
Subject: skeletons

---
 src/act4e_solutions/intro.py                     |  6 ++
 src/act4e_solutions/maps.py                      | 26 ++++++++
 src/act4e_solutions/maps_representation.py       | 17 ++++++
 src/act4e_solutions/posets.py                    |  0
 src/act4e_solutions/posets_bounds.py             | 76 ++++++++++++++++++++++++
 src/act4e_solutions/posets_construction.py       | 18 ++++++
 src/act4e_solutions/posets_interval.py           | 33 ++++++++++
 src/act4e_solutions/posets_map.py                | 15 +++++
 src/act4e_solutions/posets_monoidal.py           | 12 ++++
 src/act4e_solutions/posets_product.py            | 10 ++++
 src/act4e_solutions/posets_representation.py     | 12 ++++
 src/act4e_solutions/posets_sum.py                | 18 ++++++
 src/act4e_solutions/py.typed                     |  0
 src/act4e_solutions/relations.py                 | 61 +++++++++++++++++++
 src/act4e_solutions/relations_representation.py  | 15 +++++
 src/act4e_solutions/semigroups.py                | 10 ++++
 src/act4e_solutions/semigroups_representation.py | 30 ++++++++++
 src/act4e_solutions/sets.py                      | 14 +++++
 src/act4e_solutions/sets_power.py                | 18 ++++++
 src/act4e_solutions/sets_product.py              | 18 ++++++
 src/act4e_solutions/sets_properties.py           | 30 ++++++++++
 src/act4e_solutions/sets_representation.py       | 13 ++++
 src/act4e_solutions/sets_sum.py                  | 19 ++++++
 src/act4e_solutions/sets_union_inter.py          | 28 +++++++++
 24 files changed, 499 insertions(+)
 create mode 100644 src/act4e_solutions/intro.py
 create mode 100644 src/act4e_solutions/maps.py
 create mode 100644 src/act4e_solutions/maps_representation.py
 create mode 100644 src/act4e_solutions/posets.py
 create mode 100644 src/act4e_solutions/posets_bounds.py
 create mode 100644 src/act4e_solutions/posets_construction.py
 create mode 100644 src/act4e_solutions/posets_interval.py
 create mode 100644 src/act4e_solutions/posets_map.py
 create mode 100644 src/act4e_solutions/posets_monoidal.py
 create mode 100644 src/act4e_solutions/posets_product.py
 create mode 100644 src/act4e_solutions/posets_representation.py
 create mode 100644 src/act4e_solutions/posets_sum.py
 create mode 100644 src/act4e_solutions/py.typed
 create mode 100644 src/act4e_solutions/relations.py
 create mode 100644 src/act4e_solutions/relations_representation.py
 create mode 100644 src/act4e_solutions/semigroups.py
 create mode 100644 src/act4e_solutions/semigroups_representation.py
 create mode 100644 src/act4e_solutions/sets.py
 create mode 100644 src/act4e_solutions/sets_power.py
 create mode 100644 src/act4e_solutions/sets_product.py
 create mode 100644 src/act4e_solutions/sets_properties.py
 create mode 100644 src/act4e_solutions/sets_representation.py
 create mode 100644 src/act4e_solutions/sets_sum.py
 create mode 100644 src/act4e_solutions/sets_union_inter.py

(limited to 'src/act4e_solutions')

diff --git a/src/act4e_solutions/intro.py b/src/act4e_solutions/intro.py
new file mode 100644
index 0000000..4d8207f
--- /dev/null
+++ b/src/act4e_solutions/intro.py
@@ -0,0 +1,6 @@
+import act4e_interfaces as I
+
+
+class MySimpleIntro(I.SimpleIntro):
+    def sum(self, a: int, b: int) -> int:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/maps.py b/src/act4e_solutions/maps.py
new file mode 100644
index 0000000..cf4e98f
--- /dev/null
+++ b/src/act4e_solutions/maps.py
@@ -0,0 +1,26 @@
+from typing import overload, TypeVar
+
+import act4e_interfaces as I
+
+A = TypeVar("A")
+B = TypeVar("B")
+C = TypeVar("C")
+
+
+class MyFiniteMapOperations(I.FiniteMapOperations):
+    @overload
+    def identity(self, s: I.FiniteSet[A]) -> I.FiniteMap[A, A]:
+        ...
+
+    @overload
+    def identity(self, s: I.Setoid[A]) -> I.Mapping[A, A]:
+        ...
+
+    def identity(self, s: I.Setoid[A]) -> I.Mapping[A, A]:
+        raise NotImplementedError()
+
+    def compose(self, f: I.FiniteMap[A, B], g: I.FiniteMap[B, C]) -> I.FiniteMap[A, C]:
+        raise NotImplementedError()
+
+    def as_relation(self, f: I.FiniteMap[A, B]) -> I.FiniteRelation[A, B]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/maps_representation.py b/src/act4e_solutions/maps_representation.py
new file mode 100644
index 0000000..b77ef06
--- /dev/null
+++ b/src/act4e_solutions/maps_representation.py
@@ -0,0 +1,17 @@
+from typing import Any, TypeVar
+
+import act4e_interfaces as I
+
+__all__ = ["MyFiniteMapRepresentation"]
+
+A = TypeVar("A")
+B = TypeVar("B")
+
+
+class MyFiniteMapRepresentation(I.FiniteMapRepresentation):
+
+    def load(self, h: I.IOHelper, s: I.FiniteMap_desc) -> I.FiniteMap[A, B]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, m: I.FiniteMap[Any, Any]) -> I.FiniteMap_desc:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets.py b/src/act4e_solutions/posets.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/act4e_solutions/posets_bounds.py b/src/act4e_solutions/posets_bounds.py
new file mode 100644
index 0000000..d582e67
--- /dev/null
+++ b/src/act4e_solutions/posets_bounds.py
@@ -0,0 +1,76 @@
+from typing import Any, List, Optional, overload, TypeVar
+
+import act4e_interfaces as I
+
+E = TypeVar("E")
+X = TypeVar("X")
+
+__all__ = ["MyFinitePosetMeasurement"]
+
+
+class MyFinitePosetMeasurement(I.FinitePosetMeasurement):
+    def height(self, fp: I.FinitePoset[Any]) -> int:
+        raise NotImplementedError()
+
+    def width(self, fp: I.FinitePoset[Any]) -> int:
+        raise NotImplementedError()
+
+
+class MyFinitePosetConstructionOpposite(I.FinitePosetConstructionOpposite):
+    @overload
+    def opposite(self, p: I.FinitePoset[X]) -> I.FinitePoset[X]:
+        ...
+
+    @overload
+    def opposite(self, p: I.Poset[X]) -> I.Poset[X]:
+        ...
+
+    def opposite(self, m: I.Poset[X]) -> I.Poset[X]:
+        raise NotImplementedError()
+
+
+class MyFinitePosetSubsetProperties(I.FinitePosetSubsetProperties):
+    def is_chain(self, fp: I.FinitePoset[X], s: List[X]) -> bool:
+        raise NotImplementedError()
+
+    def is_antichain(self, fp: I.FinitePoset[X], s: List[X]) -> bool:
+        raise NotImplementedError()
+
+
+class MyFinitePosetSubsetProperties2(I.FinitePosetSubsetProperties2):
+
+    def is_lower_set(self, fp: I.FinitePoset[X], s: List[X]) -> bool:
+        raise NotImplementedError()
+
+    def is_upper_set(self, fp: I.FinitePoset[X], s: List[X]) -> bool:
+        raise NotImplementedError()
+
+
+class MyFinitePosetClosures(I.FinitePosetClosures):
+    def upper_closure(self, fp: I.FinitePoset[X], s: List[X]) -> List[X]:
+        raise NotImplementedError()
+
+    def lower_closure(self, fp: I.FinitePoset[X], s: List[X]) -> List[X]:
+        raise NotImplementedError()
+
+
+class MyFinitePosetInfSup(I.FinitePosetInfSup):
+    def lower_bounds(self, fp: I.FinitePoset[E], s: List[E]) -> List[E]:
+        raise NotImplementedError()
+
+    def upper_bounds(self, fp: I.FinitePoset[E], s: List[E]) -> List[E]:
+        raise NotImplementedError()
+
+    def infimum(self, fp: I.FinitePoset[E], s: List[E]) -> Optional[E]:
+        raise NotImplementedError()
+
+    def supremum(self, fp: I.FinitePoset[E], s: List[E]) -> Optional[E]:
+        raise NotImplementedError()
+
+
+class MyFinitePosetMinMax(I.FinitePosetMinMax):
+    def minimal(self, fp: I.FinitePoset[E], S: List[E]) -> List[E]:
+        raise NotImplementedError()
+
+    def maximal(self, fp: I.FinitePoset[E], S: List[E]) -> List[E]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_construction.py b/src/act4e_solutions/posets_construction.py
new file mode 100644
index 0000000..f7fb2ae
--- /dev/null
+++ b/src/act4e_solutions/posets_construction.py
@@ -0,0 +1,18 @@
+from typing import Any, overload, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyPosetConstructionPower(I.PosetConstructionPower):
+    @overload
+    def powerposet(self, s: I.FiniteSet[X]) -> I.FinitePosetOfFiniteSubsets[X, Any]:
+        ...
+
+    @overload
+    def powerposet(self, s: I.Setoid[X]) -> I.PosetOfFiniteSubsets[X, Any]:
+        ...
+
+    def powerposet(self, s: I.Setoid[X]) -> I.PosetOfFiniteSubsets[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_interval.py b/src/act4e_solutions/posets_interval.py
new file mode 100644
index 0000000..0553811
--- /dev/null
+++ b/src/act4e_solutions/posets_interval.py
@@ -0,0 +1,33 @@
+from typing import Any, overload, TypeVar
+
+import act4e_interfaces as I
+
+C = TypeVar("C")
+E = TypeVar("E")
+X = TypeVar("X")
+
+
+class MyFinitePosetConstructionTwisted(I.FinitePosetConstructionTwisted):
+    @overload
+    def twisted(self, s: I.FinitePoset[X]) -> I.FinitePosetOfIntervals[X, Any]:
+        ...
+
+    @overload
+    def twisted(self, s: I.Poset[X]) -> I.PosetOfIntervals[X, Any]:
+        ...
+
+    def twisted(self, s: I.Poset[X]) -> I.PosetOfIntervals[X, Any]:
+        raise NotImplementedError()
+
+
+class MyFinitePosetConstructionArrow(I.FinitePosetConstructionArrow):
+    @overload
+    def arrow(self, s: I.FinitePoset[X]) -> I.FinitePosetOfIntervals[X, Any]:
+        ...
+
+    @overload
+    def arrow(self, s: I.Poset[X]) -> I.PosetOfIntervals[X, Any]:
+        ...
+
+    def arrow(self, s: I.Poset[X]) -> I.PosetOfIntervals[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_map.py b/src/act4e_solutions/posets_map.py
new file mode 100644
index 0000000..d2671bb
--- /dev/null
+++ b/src/act4e_solutions/posets_map.py
@@ -0,0 +1,15 @@
+from typing import TypeVar
+
+import act4e_interfaces as I
+
+A = TypeVar("A")
+B = TypeVar("B")
+X = TypeVar("X")
+
+
+class MyFiniteMonotoneMapProperties(I.FiniteMonotoneMapProperties):
+    def is_monotone(self, p1: I.FinitePoset[A], p2: I.FinitePoset[B], m: I.FiniteMap[A, B]) -> bool:
+        raise NotImplementedError()
+
+    def is_antitone(self, p1: I.FinitePoset[A], p2: I.FinitePoset[B], m: I.FiniteMap[A, B]) -> bool:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_monoidal.py b/src/act4e_solutions/posets_monoidal.py
new file mode 100644
index 0000000..1c18ce6
--- /dev/null
+++ b/src/act4e_solutions/posets_monoidal.py
@@ -0,0 +1,12 @@
+from typing import TypeVar
+
+import act4e_interfaces as I
+
+A = TypeVar("A")
+B = TypeVar("B")
+X = TypeVar("X")
+
+
+class MyMonoidalPosetOperations(I.MonoidalPosetOperations):
+    def is_monoidal_poset(self, fp: I.FinitePoset[X], fm: I.FiniteMonoid[X]) -> bool:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_product.py b/src/act4e_solutions/posets_product.py
new file mode 100644
index 0000000..035eabe
--- /dev/null
+++ b/src/act4e_solutions/posets_product.py
@@ -0,0 +1,10 @@
+from typing import Any, Sequence, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyFinitePosetConstructionProduct(I.FinitePosetConstructionProduct):
+    def product(self, ps: Sequence[I.FinitePoset[X]]) -> I.FinitePosetProduct[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_representation.py b/src/act4e_solutions/posets_representation.py
new file mode 100644
index 0000000..9bdca1f
--- /dev/null
+++ b/src/act4e_solutions/posets_representation.py
@@ -0,0 +1,12 @@
+from typing import Any
+
+import act4e_interfaces as I
+
+
+class MyFinitePosetRepresentation(I.FinitePosetRepresentation):
+
+    def load(self, h: I.IOHelper, s: I.FinitePoset_desc) -> I.FinitePoset[Any]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, p: I.FinitePoset[Any]) -> I.FinitePoset_desc:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_sum.py b/src/act4e_solutions/posets_sum.py
new file mode 100644
index 0000000..a91b0a0
--- /dev/null
+++ b/src/act4e_solutions/posets_sum.py
@@ -0,0 +1,18 @@
+from typing import Any, overload, Sequence, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyFinitePosetConstructionSum(I.FinitePosetConstructionSum):
+    @overload
+    def disjoint_union(self, ps: Sequence[I.FinitePoset[X]]) -> I.FinitePosetDisjointUnion[X, Any]:
+        ...
+
+    @overload
+    def disjoint_union(self, ps: Sequence[I.Poset[X]]) -> I.PosetDisjointUnion[X, Any]:
+        ...
+
+    def disjoint_union(self, ps: Sequence[I.Poset[X]]) -> I.PosetDisjointUnion[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/py.typed b/src/act4e_solutions/py.typed
new file mode 100644
index 0000000..e69de29
diff --git a/src/act4e_solutions/relations.py b/src/act4e_solutions/relations.py
new file mode 100644
index 0000000..47a7c3e
--- /dev/null
+++ b/src/act4e_solutions/relations.py
@@ -0,0 +1,61 @@
+from typing import Any, TypeVar
+
+import act4e_interfaces as I
+from act4e_interfaces import FiniteRelation
+
+E1 = TypeVar("E1")
+E2 = TypeVar("E2")
+E3 = TypeVar("E3")
+E = TypeVar("E")
+
+A = TypeVar("A")
+B = TypeVar("B")
+
+
+class MyFiniteRelationProperties(I.FiniteRelationProperties):
+    def is_surjective(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_defined_everywhere(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_injective(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_single_valued(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+
+class MyFiniteRelationOperations(I.FiniteRelationOperations):
+    def transpose(self, fr: I.FiniteRelation[A, B]) -> I.FiniteRelation[B, A]:
+        raise NotImplementedError()
+
+
+class MyFiniteEndorelationProperties(I.FiniteEndorelationProperties):
+    def is_reflexive(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_irreflexive(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_transitive(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_symmetric(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_antisymmetric(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+    def is_asymmetric(self, fr: I.FiniteRelation[Any, Any]) -> bool:
+        raise NotImplementedError()
+
+
+class MyFiniteEndorelationOperations(I.FiniteEndorelationOperations):
+    def transitive_closure(self, fr: I.FiniteRelation[E, E]) -> I.FiniteRelation[E, E]:
+        raise NotImplementedError()
+
+
+class MyFiniteRelationCompose(I.FiniteRelationCompose):
+    def compose(self, fr1: FiniteRelation[E1, E2], fr2: FiniteRelation[E2, E3]) -> I.FiniteRelation[E1, E3]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/relations_representation.py b/src/act4e_solutions/relations_representation.py
new file mode 100644
index 0000000..e150534
--- /dev/null
+++ b/src/act4e_solutions/relations_representation.py
@@ -0,0 +1,15 @@
+from typing import TypeVar
+
+import act4e_interfaces as I
+
+A = TypeVar("A")
+B = TypeVar("B")
+
+
+class MyFiniteRelationRepresentation(I.FiniteRelationRepresentation):
+
+    def load(self, h: I.IOHelper, data: I.FiniteRelation_desc) -> I.FiniteRelation[A, B]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, f: I.FiniteRelation[A, B]) -> I.FiniteRelation_desc:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/semigroups.py b/src/act4e_solutions/semigroups.py
new file mode 100644
index 0000000..31ecd58
--- /dev/null
+++ b/src/act4e_solutions/semigroups.py
@@ -0,0 +1,10 @@
+from typing import List, TypeVar
+
+import act4e_interfaces as I
+
+C = TypeVar("C")
+
+
+class MyFiniteSemigroupConstruct(I.FiniteSemigroupConstruct):
+    def free(self, fs: I.FiniteSet[C]) -> I.FreeSemigroup[C, List[C]]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/semigroups_representation.py b/src/act4e_solutions/semigroups_representation.py
new file mode 100644
index 0000000..5d90823
--- /dev/null
+++ b/src/act4e_solutions/semigroups_representation.py
@@ -0,0 +1,30 @@
+from typing import Any, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyFiniteSemigroupRepresentation(I.FiniteSemigroupRepresentation):
+
+    def load(self, h: I.IOHelper, s: I.FiniteSemigroup_desc) -> I.FiniteSemigroup[Any]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, m: I.FiniteSemigroup[Any]) -> I.FiniteSemigroup_desc:
+        raise NotImplementedError()
+
+
+class MyFiniteMonoidRepresentation(I.FiniteMonoidRepresentation):
+    def load(self, h: I.IOHelper, s: I.FiniteMonoid_desc) -> I.FiniteMonoid[X]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, m: I.FiniteMonoid[Any]) -> I.FiniteMonoid_desc:
+        raise NotImplementedError()
+
+
+class MyFiniteGroupRepresentation(I.FiniteGroupRepresentation):
+    def load(self, h: I.IOHelper, s: I.FiniteGroup_desc) -> I.FiniteGroup[X]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, m: I.FiniteGroup[Any]) -> I.FiniteGroup_desc:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets.py b/src/act4e_solutions/sets.py
new file mode 100644
index 0000000..7cb4252
--- /dev/null
+++ b/src/act4e_solutions/sets.py
@@ -0,0 +1,14 @@
+from typing import Callable, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyEnumerableSetsOperations(I.EnumerableSetsOperations):
+    def make_set_sequence(self, f: Callable[[int], X]) -> I.EnumerableSet[X]:
+        raise NotImplementedError()
+
+    def union_esets(self, a: I.EnumerableSet[X], b: I.EnumerableSet[X]) -> I.EnumerableSet[X]:
+        """Creates the union of two EnumerableSet."""
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_power.py b/src/act4e_solutions/sets_power.py
new file mode 100644
index 0000000..1f3c103
--- /dev/null
+++ b/src/act4e_solutions/sets_power.py
@@ -0,0 +1,18 @@
+from typing import Any, overload, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyMakePowerSet(I.MakePowerSet):
+    @overload
+    def powerset(self, s: I.FiniteSet[X]) -> I.FiniteSetOfFiniteSubsets[X, Any]:
+        ...
+
+    @overload
+    def powerset(self, s: I.Setoid[X]) -> I.SetOfFiniteSubsets[X, Any]:
+        ...
+
+    def powerset(self, s: I.Setoid[X]) -> I.SetOfFiniteSubsets[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_product.py b/src/act4e_solutions/sets_product.py
new file mode 100644
index 0000000..19661ca
--- /dev/null
+++ b/src/act4e_solutions/sets_product.py
@@ -0,0 +1,18 @@
+from typing import Any, overload, Sequence, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyMakeSetProduct(I.MakeSetProduct):
+    @overload
+    def product(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetProduct[X, Any]:
+        ...
+
+    @overload
+    def product(self, components: Sequence[I.Setoid[X]]) -> I.SetProduct[X, Any]:
+        ...
+
+    def product(self, components: Sequence[I.Setoid[X]]) -> I.SetProduct[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_properties.py b/src/act4e_solutions/sets_properties.py
new file mode 100644
index 0000000..ef9f291
--- /dev/null
+++ b/src/act4e_solutions/sets_properties.py
@@ -0,0 +1,30 @@
+from typing import Any, overload, Sequence, TypeVar
+
+import act4e_interfaces as I
+
+__all__ = ["MyMakeSetUnion", "MyMakeSetIntersection", "MyFiniteSetProperties"]
+
+X = TypeVar("X")
+
+
+class MyFiniteSetProperties(I.FiniteSetProperties):
+    def is_subset(self, a: I.FiniteSet[X], b: I.FiniteSet[X]) -> bool:
+        raise NotImplementedError()
+
+
+class MyMakeSetUnion(I.MakeSetUnion):
+    @overload
+    def union(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetUnion[X, Any]:
+        ...
+
+    @overload
+    def union(self, components: Sequence[I.EnumerableSet[X]]) -> I.EnumerableSetUnion[X, Any]:
+        ...
+
+    def union(self, components: Sequence[I.Setoid[X]]) -> I.SetUnion[X, Any]:
+        raise NotImplementedError()
+
+
+class MyMakeSetIntersection(I.MakeSetIntersection):
+    def intersection(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSet[X]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_representation.py b/src/act4e_solutions/sets_representation.py
new file mode 100644
index 0000000..d8c56d7
--- /dev/null
+++ b/src/act4e_solutions/sets_representation.py
@@ -0,0 +1,13 @@
+from typing import Any
+
+import act4e_interfaces as I
+
+__all__ = ["MyFiniteSetRepresentation"]
+
+
+class MyFiniteSetRepresentation(I.FiniteSetRepresentation):
+    def load(self, h: I.IOHelper, data: I.FiniteSet_desc) -> I.FiniteSet[Any]:
+        raise NotImplementedError()
+
+    def save(self, h: I.IOHelper, f: I.FiniteSet[Any]) -> I.FiniteSet_desc:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_sum.py b/src/act4e_solutions/sets_sum.py
new file mode 100644
index 0000000..54e0e95
--- /dev/null
+++ b/src/act4e_solutions/sets_sum.py
@@ -0,0 +1,19 @@
+from typing import Any, overload, Sequence, TypeVar
+
+import act4e_interfaces as I
+
+
+X = TypeVar("X")
+
+
+class MyMakeSetDisjointUnion(I.MakeSetDisjointUnion):
+    @overload
+    def disjoint_union(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetDisjointUnion[X, Any]:
+        ...
+
+    @overload
+    def disjoint_union(self, components: Sequence[I.Setoid[X]]) -> I.SetDisjointUnion[X, Any]:
+        ...
+
+    def disjoint_union(self, components: Sequence[I.Setoid[X]]) -> I.SetDisjointUnion[X, Any]:
+        raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_union_inter.py b/src/act4e_solutions/sets_union_inter.py
new file mode 100644
index 0000000..72f9e64
--- /dev/null
+++ b/src/act4e_solutions/sets_union_inter.py
@@ -0,0 +1,28 @@
+from typing import Any, overload, Sequence, TypeVar
+
+import act4e_interfaces as I
+
+X = TypeVar("X")
+
+
+class MyMakeSetUnion(I.MakeSetUnion):
+    @overload
+    def union(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetUnion[X, Any]:
+        ...
+
+    @overload
+    def union(self, components: Sequence[I.EnumerableSet[X]]) -> I.EnumerableSetUnion[X, Any]:
+        ...
+
+    def union(self, components: Sequence[I.EnumerableSet[X]]) -> I.EnumerableSetUnion[X, Any]:
+        raise NotImplementedError()
+
+
+class MySetoidOperations(I.SetoidOperations):
+    @classmethod
+    def union_setoids(cls, a: I.Setoid[X], b: I.Setoid[X]) -> I.Setoid[X]:
+        raise NotImplementedError()
+
+    @classmethod
+    def intersection_setoids(cls, a: I.Setoid[X], b: I.Setoid[X]) -> I.Setoid[X]:
+        raise NotImplementedError()
-- 
cgit v1.2.1


From cc712ed5fdf07e24af3ac0a133f483c506af55a9 Mon Sep 17 00:00:00 2001
From: Andrea Censi <acensi@ethz.ch>
Date: Mon, 21 Feb 2022 12:24:14 +0100
Subject: skeletons

---
 src/act4e_solutions/intro.py                     |  2 +-
 src/act4e_solutions/maps.py                      |  2 +-
 src/act4e_solutions/maps_representation.py       |  5 ++---
 src/act4e_solutions/posets_bounds.py             | 19 ++++++++-----------
 src/act4e_solutions/posets_construction.py       |  2 +-
 src/act4e_solutions/posets_interval.py           |  4 ++--
 src/act4e_solutions/posets_map.py                |  2 +-
 src/act4e_solutions/posets_monoidal.py           |  2 +-
 src/act4e_solutions/posets_product.py            |  2 +-
 src/act4e_solutions/posets_representation.py     |  2 +-
 src/act4e_solutions/posets_sum.py                |  2 +-
 src/act4e_solutions/relations.py                 | 10 +++++-----
 src/act4e_solutions/relations_representation.py  |  2 +-
 src/act4e_solutions/semigroups.py                |  2 +-
 src/act4e_solutions/semigroups_representation.py |  6 +++---
 src/act4e_solutions/sets.py                      |  2 +-
 src/act4e_solutions/sets_power.py                |  2 +-
 src/act4e_solutions/sets_product.py              |  2 +-
 src/act4e_solutions/sets_properties.py           | 10 ++++------
 src/act4e_solutions/sets_representation.py       |  6 ++----
 src/act4e_solutions/sets_sum.py                  |  2 +-
 src/act4e_solutions/sets_union_inter.py          |  4 ++--
 22 files changed, 42 insertions(+), 50 deletions(-)

(limited to 'src/act4e_solutions')

diff --git a/src/act4e_solutions/intro.py b/src/act4e_solutions/intro.py
index 4d8207f..2a4856d 100644
--- a/src/act4e_solutions/intro.py
+++ b/src/act4e_solutions/intro.py
@@ -1,6 +1,6 @@
 import act4e_interfaces as I
 
 
-class MySimpleIntro(I.SimpleIntro):
+class SolSimpleIntro(I.SimpleIntro):
     def sum(self, a: int, b: int) -> int:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/maps.py b/src/act4e_solutions/maps.py
index cf4e98f..4984eef 100644
--- a/src/act4e_solutions/maps.py
+++ b/src/act4e_solutions/maps.py
@@ -7,7 +7,7 @@ B = TypeVar("B")
 C = TypeVar("C")
 
 
-class MyFiniteMapOperations(I.FiniteMapOperations):
+class SolFiniteMapOperations(I.FiniteMapOperations):
     @overload
     def identity(self, s: I.FiniteSet[A]) -> I.FiniteMap[A, A]:
         ...
diff --git a/src/act4e_solutions/maps_representation.py b/src/act4e_solutions/maps_representation.py
index b77ef06..45c816e 100644
--- a/src/act4e_solutions/maps_representation.py
+++ b/src/act4e_solutions/maps_representation.py
@@ -1,14 +1,13 @@
 from typing import Any, TypeVar
 
 import act4e_interfaces as I
-
-__all__ = ["MyFiniteMapRepresentation"]
+ 
 
 A = TypeVar("A")
 B = TypeVar("B")
 
 
-class MyFiniteMapRepresentation(I.FiniteMapRepresentation):
+class SolFiniteMapRepresentation(I.FiniteMapRepresentation):
 
     def load(self, h: I.IOHelper, s: I.FiniteMap_desc) -> I.FiniteMap[A, B]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_bounds.py b/src/act4e_solutions/posets_bounds.py
index d582e67..73adc98 100644
--- a/src/act4e_solutions/posets_bounds.py
+++ b/src/act4e_solutions/posets_bounds.py
@@ -3,12 +3,9 @@ from typing import Any, List, Optional, overload, TypeVar
 import act4e_interfaces as I
 
 E = TypeVar("E")
-X = TypeVar("X")
+X = TypeVar("X") 
 
-__all__ = ["MyFinitePosetMeasurement"]
-
-
-class MyFinitePosetMeasurement(I.FinitePosetMeasurement):
+class SolFinitePosetMeasurement(I.FinitePosetMeasurement):
     def height(self, fp: I.FinitePoset[Any]) -> int:
         raise NotImplementedError()
 
@@ -16,7 +13,7 @@ class MyFinitePosetMeasurement(I.FinitePosetMeasurement):
         raise NotImplementedError()
 
 
-class MyFinitePosetConstructionOpposite(I.FinitePosetConstructionOpposite):
+class SolFinitePosetConstructionOpposite(I.FinitePosetConstructionOpposite):
     @overload
     def opposite(self, p: I.FinitePoset[X]) -> I.FinitePoset[X]:
         ...
@@ -29,7 +26,7 @@ class MyFinitePosetConstructionOpposite(I.FinitePosetConstructionOpposite):
         raise NotImplementedError()
 
 
-class MyFinitePosetSubsetProperties(I.FinitePosetSubsetProperties):
+class SolFinitePosetSubsetProperties(I.FinitePosetSubsetProperties):
     def is_chain(self, fp: I.FinitePoset[X], s: List[X]) -> bool:
         raise NotImplementedError()
 
@@ -37,7 +34,7 @@ class MyFinitePosetSubsetProperties(I.FinitePosetSubsetProperties):
         raise NotImplementedError()
 
 
-class MyFinitePosetSubsetProperties2(I.FinitePosetSubsetProperties2):
+class SolFinitePosetSubsetProperties2(I.FinitePosetSubsetProperties2):
 
     def is_lower_set(self, fp: I.FinitePoset[X], s: List[X]) -> bool:
         raise NotImplementedError()
@@ -46,7 +43,7 @@ class MyFinitePosetSubsetProperties2(I.FinitePosetSubsetProperties2):
         raise NotImplementedError()
 
 
-class MyFinitePosetClosures(I.FinitePosetClosures):
+class SolFinitePosetClosures(I.FinitePosetClosures):
     def upper_closure(self, fp: I.FinitePoset[X], s: List[X]) -> List[X]:
         raise NotImplementedError()
 
@@ -54,7 +51,7 @@ class MyFinitePosetClosures(I.FinitePosetClosures):
         raise NotImplementedError()
 
 
-class MyFinitePosetInfSup(I.FinitePosetInfSup):
+class SolFinitePosetInfSup(I.FinitePosetInfSup):
     def lower_bounds(self, fp: I.FinitePoset[E], s: List[E]) -> List[E]:
         raise NotImplementedError()
 
@@ -68,7 +65,7 @@ class MyFinitePosetInfSup(I.FinitePosetInfSup):
         raise NotImplementedError()
 
 
-class MyFinitePosetMinMax(I.FinitePosetMinMax):
+class SolFinitePosetMinMax(I.FinitePosetMinMax):
     def minimal(self, fp: I.FinitePoset[E], S: List[E]) -> List[E]:
         raise NotImplementedError()
 
diff --git a/src/act4e_solutions/posets_construction.py b/src/act4e_solutions/posets_construction.py
index f7fb2ae..065f931 100644
--- a/src/act4e_solutions/posets_construction.py
+++ b/src/act4e_solutions/posets_construction.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyPosetConstructionPower(I.PosetConstructionPower):
+class SolPosetConstructionPower(I.PosetConstructionPower):
     @overload
     def powerposet(self, s: I.FiniteSet[X]) -> I.FinitePosetOfFiniteSubsets[X, Any]:
         ...
diff --git a/src/act4e_solutions/posets_interval.py b/src/act4e_solutions/posets_interval.py
index 0553811..bd164eb 100644
--- a/src/act4e_solutions/posets_interval.py
+++ b/src/act4e_solutions/posets_interval.py
@@ -7,7 +7,7 @@ E = TypeVar("E")
 X = TypeVar("X")
 
 
-class MyFinitePosetConstructionTwisted(I.FinitePosetConstructionTwisted):
+class SolFinitePosetConstructionTwisted(I.FinitePosetConstructionTwisted):
     @overload
     def twisted(self, s: I.FinitePoset[X]) -> I.FinitePosetOfIntervals[X, Any]:
         ...
@@ -20,7 +20,7 @@ class MyFinitePosetConstructionTwisted(I.FinitePosetConstructionTwisted):
         raise NotImplementedError()
 
 
-class MyFinitePosetConstructionArrow(I.FinitePosetConstructionArrow):
+class SolFinitePosetConstructionArrow(I.FinitePosetConstructionArrow):
     @overload
     def arrow(self, s: I.FinitePoset[X]) -> I.FinitePosetOfIntervals[X, Any]:
         ...
diff --git a/src/act4e_solutions/posets_map.py b/src/act4e_solutions/posets_map.py
index d2671bb..a91d4d8 100644
--- a/src/act4e_solutions/posets_map.py
+++ b/src/act4e_solutions/posets_map.py
@@ -7,7 +7,7 @@ B = TypeVar("B")
 X = TypeVar("X")
 
 
-class MyFiniteMonotoneMapProperties(I.FiniteMonotoneMapProperties):
+class SolFiniteMonotoneMapProperties(I.FiniteMonotoneMapProperties):
     def is_monotone(self, p1: I.FinitePoset[A], p2: I.FinitePoset[B], m: I.FiniteMap[A, B]) -> bool:
         raise NotImplementedError()
 
diff --git a/src/act4e_solutions/posets_monoidal.py b/src/act4e_solutions/posets_monoidal.py
index 1c18ce6..96afedc 100644
--- a/src/act4e_solutions/posets_monoidal.py
+++ b/src/act4e_solutions/posets_monoidal.py
@@ -7,6 +7,6 @@ B = TypeVar("B")
 X = TypeVar("X")
 
 
-class MyMonoidalPosetOperations(I.MonoidalPosetOperations):
+class SolMonoidalPosetOperations(I.MonoidalPosetOperations):
     def is_monoidal_poset(self, fp: I.FinitePoset[X], fm: I.FiniteMonoid[X]) -> bool:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_product.py b/src/act4e_solutions/posets_product.py
index 035eabe..bf67efd 100644
--- a/src/act4e_solutions/posets_product.py
+++ b/src/act4e_solutions/posets_product.py
@@ -5,6 +5,6 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyFinitePosetConstructionProduct(I.FinitePosetConstructionProduct):
+class SolFinitePosetConstructionProduct(I.FinitePosetConstructionProduct):
     def product(self, ps: Sequence[I.FinitePoset[X]]) -> I.FinitePosetProduct[X, Any]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_representation.py b/src/act4e_solutions/posets_representation.py
index 9bdca1f..d7b2991 100644
--- a/src/act4e_solutions/posets_representation.py
+++ b/src/act4e_solutions/posets_representation.py
@@ -3,7 +3,7 @@ from typing import Any
 import act4e_interfaces as I
 
 
-class MyFinitePosetRepresentation(I.FinitePosetRepresentation):
+class SolFinitePosetRepresentation(I.FinitePosetRepresentation):
 
     def load(self, h: I.IOHelper, s: I.FinitePoset_desc) -> I.FinitePoset[Any]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/posets_sum.py b/src/act4e_solutions/posets_sum.py
index a91b0a0..3081c7f 100644
--- a/src/act4e_solutions/posets_sum.py
+++ b/src/act4e_solutions/posets_sum.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyFinitePosetConstructionSum(I.FinitePosetConstructionSum):
+class SolFinitePosetConstructionSum(I.FinitePosetConstructionSum):
     @overload
     def disjoint_union(self, ps: Sequence[I.FinitePoset[X]]) -> I.FinitePosetDisjointUnion[X, Any]:
         ...
diff --git a/src/act4e_solutions/relations.py b/src/act4e_solutions/relations.py
index 47a7c3e..048b500 100644
--- a/src/act4e_solutions/relations.py
+++ b/src/act4e_solutions/relations.py
@@ -12,7 +12,7 @@ A = TypeVar("A")
 B = TypeVar("B")
 
 
-class MyFiniteRelationProperties(I.FiniteRelationProperties):
+class SolFiniteRelationProperties(I.FiniteRelationProperties):
     def is_surjective(self, fr: I.FiniteRelation[Any, Any]) -> bool:
         raise NotImplementedError()
 
@@ -26,12 +26,12 @@ class MyFiniteRelationProperties(I.FiniteRelationProperties):
         raise NotImplementedError()
 
 
-class MyFiniteRelationOperations(I.FiniteRelationOperations):
+class SolFiniteRelationOperations(I.FiniteRelationOperations):
     def transpose(self, fr: I.FiniteRelation[A, B]) -> I.FiniteRelation[B, A]:
         raise NotImplementedError()
 
 
-class MyFiniteEndorelationProperties(I.FiniteEndorelationProperties):
+class SolFiniteEndorelationProperties(I.FiniteEndorelationProperties):
     def is_reflexive(self, fr: I.FiniteRelation[Any, Any]) -> bool:
         raise NotImplementedError()
 
@@ -51,11 +51,11 @@ class MyFiniteEndorelationProperties(I.FiniteEndorelationProperties):
         raise NotImplementedError()
 
 
-class MyFiniteEndorelationOperations(I.FiniteEndorelationOperations):
+class SolFiniteEndorelationOperations(I.FiniteEndorelationOperations):
     def transitive_closure(self, fr: I.FiniteRelation[E, E]) -> I.FiniteRelation[E, E]:
         raise NotImplementedError()
 
 
-class MyFiniteRelationCompose(I.FiniteRelationCompose):
+class SolFiniteRelationCompose(I.FiniteRelationCompose):
     def compose(self, fr1: FiniteRelation[E1, E2], fr2: FiniteRelation[E2, E3]) -> I.FiniteRelation[E1, E3]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/relations_representation.py b/src/act4e_solutions/relations_representation.py
index e150534..8dbde1c 100644
--- a/src/act4e_solutions/relations_representation.py
+++ b/src/act4e_solutions/relations_representation.py
@@ -6,7 +6,7 @@ A = TypeVar("A")
 B = TypeVar("B")
 
 
-class MyFiniteRelationRepresentation(I.FiniteRelationRepresentation):
+class SolFiniteRelationRepresentation(I.FiniteRelationRepresentation):
 
     def load(self, h: I.IOHelper, data: I.FiniteRelation_desc) -> I.FiniteRelation[A, B]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/semigroups.py b/src/act4e_solutions/semigroups.py
index 31ecd58..1b02766 100644
--- a/src/act4e_solutions/semigroups.py
+++ b/src/act4e_solutions/semigroups.py
@@ -5,6 +5,6 @@ import act4e_interfaces as I
 C = TypeVar("C")
 
 
-class MyFiniteSemigroupConstruct(I.FiniteSemigroupConstruct):
+class SolFiniteSemigroupConstruct(I.FiniteSemigroupConstruct):
     def free(self, fs: I.FiniteSet[C]) -> I.FreeSemigroup[C, List[C]]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/semigroups_representation.py b/src/act4e_solutions/semigroups_representation.py
index 5d90823..23e2ba1 100644
--- a/src/act4e_solutions/semigroups_representation.py
+++ b/src/act4e_solutions/semigroups_representation.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyFiniteSemigroupRepresentation(I.FiniteSemigroupRepresentation):
+class SolFiniteSemigroupRepresentation(I.FiniteSemigroupRepresentation):
 
     def load(self, h: I.IOHelper, s: I.FiniteSemigroup_desc) -> I.FiniteSemigroup[Any]:
         raise NotImplementedError()
@@ -14,7 +14,7 @@ class MyFiniteSemigroupRepresentation(I.FiniteSemigroupRepresentation):
         raise NotImplementedError()
 
 
-class MyFiniteMonoidRepresentation(I.FiniteMonoidRepresentation):
+class SolFiniteMonoidRepresentation(I.FiniteMonoidRepresentation):
     def load(self, h: I.IOHelper, s: I.FiniteMonoid_desc) -> I.FiniteMonoid[X]:
         raise NotImplementedError()
 
@@ -22,7 +22,7 @@ class MyFiniteMonoidRepresentation(I.FiniteMonoidRepresentation):
         raise NotImplementedError()
 
 
-class MyFiniteGroupRepresentation(I.FiniteGroupRepresentation):
+class SolFiniteGroupRepresentation(I.FiniteGroupRepresentation):
     def load(self, h: I.IOHelper, s: I.FiniteGroup_desc) -> I.FiniteGroup[X]:
         raise NotImplementedError()
 
diff --git a/src/act4e_solutions/sets.py b/src/act4e_solutions/sets.py
index 7cb4252..1dc635f 100644
--- a/src/act4e_solutions/sets.py
+++ b/src/act4e_solutions/sets.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyEnumerableSetsOperations(I.EnumerableSetsOperations):
+class SolEnumerableSetsOperations(I.EnumerableSetsOperations):
     def make_set_sequence(self, f: Callable[[int], X]) -> I.EnumerableSet[X]:
         raise NotImplementedError()
 
diff --git a/src/act4e_solutions/sets_power.py b/src/act4e_solutions/sets_power.py
index 1f3c103..2e9c970 100644
--- a/src/act4e_solutions/sets_power.py
+++ b/src/act4e_solutions/sets_power.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyMakePowerSet(I.MakePowerSet):
+class SolMakePowerSet(I.MakePowerSet):
     @overload
     def powerset(self, s: I.FiniteSet[X]) -> I.FiniteSetOfFiniteSubsets[X, Any]:
         ...
diff --git a/src/act4e_solutions/sets_product.py b/src/act4e_solutions/sets_product.py
index 19661ca..d3e5558 100644
--- a/src/act4e_solutions/sets_product.py
+++ b/src/act4e_solutions/sets_product.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyMakeSetProduct(I.MakeSetProduct):
+class SolMakeSetProduct(I.MakeSetProduct):
     @overload
     def product(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetProduct[X, Any]:
         ...
diff --git a/src/act4e_solutions/sets_properties.py b/src/act4e_solutions/sets_properties.py
index ef9f291..1a2ab88 100644
--- a/src/act4e_solutions/sets_properties.py
+++ b/src/act4e_solutions/sets_properties.py
@@ -1,18 +1,16 @@
 from typing import Any, overload, Sequence, TypeVar
 
 import act4e_interfaces as I
-
-__all__ = ["MyMakeSetUnion", "MyMakeSetIntersection", "MyFiniteSetProperties"]
-
+ 
 X = TypeVar("X")
 
 
-class MyFiniteSetProperties(I.FiniteSetProperties):
+class SolFiniteSetProperties(I.FiniteSetProperties):
     def is_subset(self, a: I.FiniteSet[X], b: I.FiniteSet[X]) -> bool:
         raise NotImplementedError()
 
 
-class MyMakeSetUnion(I.MakeSetUnion):
+class SolMakeSetUnion(I.MakeSetUnion):
     @overload
     def union(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetUnion[X, Any]:
         ...
@@ -25,6 +23,6 @@ class MyMakeSetUnion(I.MakeSetUnion):
         raise NotImplementedError()
 
 
-class MyMakeSetIntersection(I.MakeSetIntersection):
+class SolMakeSetIntersection(I.MakeSetIntersection):
     def intersection(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSet[X]:
         raise NotImplementedError()
diff --git a/src/act4e_solutions/sets_representation.py b/src/act4e_solutions/sets_representation.py
index d8c56d7..10d89c9 100644
--- a/src/act4e_solutions/sets_representation.py
+++ b/src/act4e_solutions/sets_representation.py
@@ -1,11 +1,9 @@
 from typing import Any
 
 import act4e_interfaces as I
+ 
 
-__all__ = ["MyFiniteSetRepresentation"]
-
-
-class MyFiniteSetRepresentation(I.FiniteSetRepresentation):
+class SolFiniteSetRepresentation(I.FiniteSetRepresentation):
     def load(self, h: I.IOHelper, data: I.FiniteSet_desc) -> I.FiniteSet[Any]:
         raise NotImplementedError()
 
diff --git a/src/act4e_solutions/sets_sum.py b/src/act4e_solutions/sets_sum.py
index 54e0e95..ee82985 100644
--- a/src/act4e_solutions/sets_sum.py
+++ b/src/act4e_solutions/sets_sum.py
@@ -6,7 +6,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyMakeSetDisjointUnion(I.MakeSetDisjointUnion):
+class SolMakeSetDisjointUnion(I.MakeSetDisjointUnion):
     @overload
     def disjoint_union(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetDisjointUnion[X, Any]:
         ...
diff --git a/src/act4e_solutions/sets_union_inter.py b/src/act4e_solutions/sets_union_inter.py
index 72f9e64..3a4c419 100644
--- a/src/act4e_solutions/sets_union_inter.py
+++ b/src/act4e_solutions/sets_union_inter.py
@@ -5,7 +5,7 @@ import act4e_interfaces as I
 X = TypeVar("X")
 
 
-class MyMakeSetUnion(I.MakeSetUnion):
+class SolMakeSetUnion(I.MakeSetUnion):
     @overload
     def union(self, components: Sequence[I.FiniteSet[X]]) -> I.FiniteSetUnion[X, Any]:
         ...
@@ -18,7 +18,7 @@ class MyMakeSetUnion(I.MakeSetUnion):
         raise NotImplementedError()
 
 
-class MySetoidOperations(I.SetoidOperations):
+class SolSetoidOperations(I.SetoidOperations):
     @classmethod
     def union_setoids(cls, a: I.Setoid[X], b: I.Setoid[X]) -> I.Setoid[X]:
         raise NotImplementedError()
-- 
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