From 2db90bfe4b174570424c408f04000902411d8755 Mon Sep 17 00:00:00 2001 From: Joshua Baer Date: Mon, 12 Apr 2021 21:51:55 +0200 Subject: update to current state of book --- vorlesungen/slides/4/galois/aufloesbarkeit.tex | 240 ++++++++++++------------- 1 file changed, 120 insertions(+), 120 deletions(-) (limited to 'vorlesungen/slides/4/galois/aufloesbarkeit.tex') diff --git a/vorlesungen/slides/4/galois/aufloesbarkeit.tex b/vorlesungen/slides/4/galois/aufloesbarkeit.tex index ef5902b..3d52b00 100644 --- a/vorlesungen/slides/4/galois/aufloesbarkeit.tex +++ b/vorlesungen/slides/4/galois/aufloesbarkeit.tex @@ -1,120 +1,120 @@ -% -% aufloesbarkeit.tex -% -% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule -% -\begin{frame}[t] -\setlength{\abovedisplayskip}{5pt} -\setlength{\belowdisplayskip}{5pt} -\frametitle{Auflösbarkeit} -\vspace{-20pt} -\begin{columns}[t,onlytextwidth] -\begin{column}{0.48\textwidth} -\uncover<2->{% -\begin{block}{Radikalerweiterung} -Automorphismen $f\in \operatorname{Gal}(\Bbbk(\alpha)/\Bbbk)$ -einer Radikalerweiterung -\[ -\Bbbk \subset \Bbbk(\alpha) -\] -sind festgelegt durch Wahl von $f(\alpha)$. - -\begin{itemize} -\item<3-> Warum: Alle $f(\alpha^k)$ sind auch festgelegt -\item<4-> $f(\alpha)$ muss eine andere Nullstelle des Minimalpolynoms sein -\end{itemize} - -\end{block}} -\uncover<8->{% -\begin{block}{Irreduzibles Polynom $m(X)\in\mathbb{Q}[X]$} -$\mathbb{Q}\subset \Bbbk$, -$n$ verschiedene Nullstellen $\mathbb{C}$: -\[ -\uncover<9->{ -\operatorname{Gal}(\Bbbk/\mathbb{Q}) -\cong -S_n} -\uncover<10->{ -\quad -\text{auflösbar?}} -\] -\end{block}} -\end{column} -\begin{column}{0.48\textwidth} -\begin{block}{\uncover<5->{Galois-Gruppen}} -\begin{center} -\begin{tikzpicture}[>=latex,thick] -\def\s{1.2} - -\uncover<2->{ -\fill[color=blue!20] (-1.1,-0.3) rectangle (0.3,{5*\s+0.3}); -\node[color=blue] at (-0.7,{2.5*\s}) [rotate=90] {Radikalerweiterungen}; -} - -\node at (0,0) {$\mathbb{Q}$}; -\node at (0,{1*\s}) {$E_1$}; -\node at (0,{2*\s}) {$E_2$}; -\node at (0,{3*\s}) {$E_3$}; -\node at (0,{4*\s}) {$\vdots\mathstrut$}; -\node at (0,{5*\s}) {$\Bbbk$}; -\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{0*\s}) -- (0,{1*\s}); -\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{1*\s}) -- (0,{2*\s}); -\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{2*\s}) -- (0,{3*\s}); -\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{3*\s}) -- (0,{4*\s}); -\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{4*\s}) -- (0,{5*\s}); - -\begin{scope}[xshift=0.5cm] -\uncover<7->{ -\fill[color=red!20] (0,{0*\s-0.3}) rectangle (4.8,{5*\s+0.3}); -\node[color=red] at (4.5,{2.5*\s}) [rotate=90] {Auflösung der Galois-Gruppe}; -} -\uncover<5->{ -\node at (0,{0*\s}) [right] {$\operatorname{Gal}(\Bbbk/\mathbb{Q})$}; -\node at (0,{1*\s}) [right] {$\operatorname{Gal}(\Bbbk/E_1)$}; -\node at (0,{2*\s}) [right] {$\operatorname{Gal}(\Bbbk/E_2)$}; -\node at (0,{3*\s}) [right] {$\operatorname{Gal}(\Bbbk/E_3)$}; -\node at (1,{4*\s}) {$\vdots\mathstrut$}; -\node at (0,{5*\s}) [right] {$\operatorname{Gal}(\Bbbk/\Bbbk)$}; -\node at (1,{0.5*\s}) {$\cap\mathstrut$}; -\node at (1,{1.5*\s}) {$\cap\mathstrut$}; -\node at (1,{2.5*\s}) {$\cap\mathstrut$}; -\node at (1,{3.5*\s}) {$\cap\mathstrut$}; -\node at (1,{4.5*\s}) {$\cap\mathstrut$}; -} - -\uncover<6->{ -\begin{scope}[xshift=2.5cm] -\node at (0,{0*\s}) {$G_n$}; -\node at (0,{1*\s}) {$G_{n-1}$}; -\node at (0,{2*\s}) {$G_{n-2}$}; -\node at (0,{3*\s}) {$G_{n-3}$}; -\node at (0,{5*\s}) {$G_0=\{e\}$}; -\node at (0,{0.5*\s}) {$\cap\mathstrut$}; -\node at (0,{1.5*\s}) {$\cap\mathstrut$}; -\node at (0,{2.5*\s}) {$\cap\mathstrut$}; -\node at (0,{3.5*\s}) {$\cap\mathstrut$}; -\node at (0,{4.5*\s}) {$\cap\mathstrut$}; -} - -\uncover<7->{ -\node[color=red] at (0.2,{0.5*\s+0.1}) [right] {\tiny $G_n/G_{n-1}$}; -\node[color=red] at (0.2,{0.5*\s-0.1}) [right] {\tiny abelsch}; - -\node[color=red] at (0.2,{1.5*\s+0.1}) [right] {\tiny $G_{n-1}/G_{n-2}$}; -\node[color=red] at (0.2,{1.5*\s-0.1}) [right] {\tiny abelsch}; - -\node[color=red] at (0.2,{2.5*\s+0.1}) [right] {\tiny $G_{n-2}/G_{n-3}$}; -\node[color=red] at (0.2,{2.5*\s-0.1}) [right] {\tiny abelsch}; -} - -\end{scope} -\end{scope} - - - -\end{tikzpicture} -\end{center} -\end{block} -\end{column} -\end{columns} -\end{frame} +% +% aufloesbarkeit.tex +% +% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule +% +\begin{frame}[t] +\setlength{\abovedisplayskip}{5pt} +\setlength{\belowdisplayskip}{5pt} +\frametitle{Auflösbarkeit} +\vspace{-20pt} +\begin{columns}[t,onlytextwidth] +\begin{column}{0.48\textwidth} +\uncover<2->{% +\begin{block}{Radikalerweiterung} +Automorphismen $f\in \operatorname{Gal}(\Bbbk(\alpha)/\Bbbk)$ +einer Radikalerweiterung +\[ +\Bbbk \subset \Bbbk(\alpha) +\] +sind festgelegt durch Wahl von $f(\alpha)$. + +\begin{itemize} +\item<3-> Warum: Alle $f(\alpha^k)$ sind auch festgelegt +\item<4-> $f(\alpha)$ muss eine andere Nullstelle des Minimalpolynoms sein +\end{itemize} + +\end{block}} +\uncover<8->{% +\begin{block}{Irreduzibles Polynom $m(X)\in\mathbb{Q}[X]$} +$\mathbb{Q}\subset \Bbbk$, +$n$ verschiedene Nullstellen $\mathbb{C}$: +\[ +\uncover<9->{ +\operatorname{Gal}(\Bbbk/\mathbb{Q}) +\cong +S_n} +\uncover<10->{ +\quad +\text{auflösbar?}} +\] +\end{block}} +\end{column} +\begin{column}{0.48\textwidth} +\begin{block}{\uncover<5->{Galois-Gruppen}} +\begin{center} +\begin{tikzpicture}[>=latex,thick] +\def\s{1.2} + +\uncover<2->{ +\fill[color=blue!20] (-1.1,-0.3) rectangle (0.3,{5*\s+0.3}); +\node[color=blue] at (-0.7,{2.5*\s}) [rotate=90] {Radikalerweiterungen}; +} + +\node at (0,0) {$\mathbb{Q}$}; +\node at (0,{1*\s}) {$E_1$}; +\node at (0,{2*\s}) {$E_2$}; +\node at (0,{3*\s}) {$E_3$}; +\node at (0,{4*\s}) {$\vdots\mathstrut$}; +\node at (0,{5*\s}) {$\Bbbk$}; +\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{0*\s}) -- (0,{1*\s}); +\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{1*\s}) -- (0,{2*\s}); +\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{2*\s}) -- (0,{3*\s}); +\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{3*\s}) -- (0,{4*\s}); +\draw[shorten >= 0.3cm,shorten <= 0.3cm] (0,{4*\s}) -- (0,{5*\s}); + +\begin{scope}[xshift=0.5cm] +\uncover<7->{ +\fill[color=red!20] (0,{0*\s-0.3}) rectangle (4.8,{5*\s+0.3}); +\node[color=red] at (4.5,{2.5*\s}) [rotate=90] {Auflösung der Galois-Gruppe}; +} +\uncover<5->{ +\node at (0,{0*\s}) [right] {$\operatorname{Gal}(\Bbbk/\mathbb{Q})$}; +\node at (0,{1*\s}) [right] {$\operatorname{Gal}(\Bbbk/E_1)$}; +\node at (0,{2*\s}) [right] {$\operatorname{Gal}(\Bbbk/E_2)$}; +\node at (0,{3*\s}) [right] {$\operatorname{Gal}(\Bbbk/E_3)$}; +\node at (1,{4*\s}) {$\vdots\mathstrut$}; +\node at (0,{5*\s}) [right] {$\operatorname{Gal}(\Bbbk/\Bbbk)$}; +\node at (1,{0.5*\s}) {$\cap\mathstrut$}; +\node at (1,{1.5*\s}) {$\cap\mathstrut$}; +\node at (1,{2.5*\s}) {$\cap\mathstrut$}; +\node at (1,{3.5*\s}) {$\cap\mathstrut$}; +\node at (1,{4.5*\s}) {$\cap\mathstrut$}; +} + +\uncover<6->{ +\begin{scope}[xshift=2.5cm] +\node at (0,{0*\s}) {$G_n$}; +\node at (0,{1*\s}) {$G_{n-1}$}; +\node at (0,{2*\s}) {$G_{n-2}$}; +\node at (0,{3*\s}) {$G_{n-3}$}; +\node at (0,{5*\s}) {$G_0=\{e\}$}; +\node at (0,{0.5*\s}) {$\cap\mathstrut$}; +\node at (0,{1.5*\s}) {$\cap\mathstrut$}; +\node at (0,{2.5*\s}) {$\cap\mathstrut$}; +\node at (0,{3.5*\s}) {$\cap\mathstrut$}; +\node at (0,{4.5*\s}) {$\cap\mathstrut$}; +} + +\uncover<7->{ +\node[color=red] at (0.2,{0.5*\s+0.1}) [right] {\tiny $G_n/G_{n-1}$}; +\node[color=red] at (0.2,{0.5*\s-0.1}) [right] {\tiny abelsch}; + +\node[color=red] at (0.2,{1.5*\s+0.1}) [right] {\tiny $G_{n-1}/G_{n-2}$}; +\node[color=red] at (0.2,{1.5*\s-0.1}) [right] {\tiny abelsch}; + +\node[color=red] at (0.2,{2.5*\s+0.1}) [right] {\tiny $G_{n-2}/G_{n-3}$}; +\node[color=red] at (0.2,{2.5*\s-0.1}) [right] {\tiny abelsch}; +} + +\end{scope} +\end{scope} + + + +\end{tikzpicture} +\end{center} +\end{block} +\end{column} +\end{columns} +\end{frame} -- cgit v1.2.1