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-rw-r--r--polymatrix/expression/mixins/determinantexprmixin.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/polymatrix/expression/mixins/determinantexprmixin.py b/polymatrix/expression/mixins/determinantexprmixin.py
index f002f0b..8d41e3d 100644
--- a/polymatrix/expression/mixins/determinantexprmixin.py
+++ b/polymatrix/expression/mixins/determinantexprmixin.py
@@ -26,6 +26,8 @@ class DeterminantExprMixin(ExpressionBaseMixin):
self,
state: ExpressionState,
) -> tuple[ExpressionState, PolyMatrix]:
+ raise Exception('not implemented')
+
if self in state.cache:
return state, state.cache[self]