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Oscar Plaisant
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up::[[permutation]]
title:: "$\mathfrak{S}_{n}$ permutations à $n$ éléments"
#maths/algèbre
----
On note $\mathfrak S_n$ L'ensemble des [[permutation|permutations]] à $n$ éléments.
# Exemple
$\mathfrak S_2 = \left\{ \begin{pmatrix}1&2\\1&2\end{pmatrix}; \begin{pmatrix}1&2\\2&1\end{pmatrix} \right\}$
$\mathfrak S_3 = \left\{ \begin{pmatrix}1&2&3\\1&2&3\end{pmatrix}; \begin{pmatrix}1&2&3\\1&3&2\end{pmatrix}; \begin{pmatrix}1&2&3\\2&1&3\end{pmatrix}; \begin{pmatrix}1&2&3\\2&3&1\end{pmatrix}; \begin{pmatrix}1&2&3\\3&1&2\end{pmatrix}; \begin{pmatrix}1&2&3\\3&2&1\end{pmatrix}\right\}$