Added proofs and fixed typos
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		@@ -20,6 +20,7 @@
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\newcommand{\Cat}{\mathcal{C}}			% Category
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\newcommand{\Set}{\mathbf{Set}}			% Set category
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\newcommand{\Grp}{\mathbf{Grp}}			% Group category
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\newcommand{\Ring}{\mathbf{Ring}}		% Ring category
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\newcommand{\Ab}{\mathbf{Ab}}			% Abelian category
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\newcommand{\Top}{\mathbf{Top}}			% Topological spaces category
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\newcommand{\K}{\mathbb{K}}			% Corps
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@@ -43,15 +44,18 @@
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\newtheorem{definition}{\lang{Définition}{Definition}}
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\newtheorem{theorem}{\lang{Théorème}{Theoreme}}
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\newtheorem{lemme}{Lemme}
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\newtheorem{exercise}{\lang{Exercice}{Exercise}}
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\newcommandx{\suite}[3][1=n,2=n]{$(#3_{#1})_{#2 \in \N}$}
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\newcommand{\innerproduct}[2]{\langle #1, #2 \rangle}
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\newenvironment{definition_sq}{\begin{mdframed}\begin{definition}}{\end{definition}\end{mdframed}}
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\newenvironment{theorem_sq}{\begin{mdframed}\begin{theorem}}{\end{theorem}\end{mdframed}}
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\newenvironment{lemme_sq}{\begin{mdframed}\begin{lemme}}{\end{lemme}\end{mdframed}}
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\newenvironment{definition_sq}[1][]{\begin{mdframed}\begin{definition}[#1]}{\end{definition}\end{mdframed}}
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\newenvironment{theorem_sq}[1][]{\begin{mdframed}\begin{theorem}[#1]}{\end{theorem}\end{mdframed}}
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\newenvironment{lemme_sq}[1][]{\begin{mdframed}\begin{lemme}[#1]}{\end{lemme}\end{mdframed}}
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\newtheorem{prop}{Proposition}
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\newenvironment{prop_sq}{\begin{mdframed}\begin{prop}}{\end{prop}\end{mdframed}}
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\newenvironment{prop_sq}[1][]{\begin{mdframed}\begin{prop}[#1]}{\end{prop}\end{mdframed}}
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\newtheorem{corollary}{Corollaire}
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\newenvironment{corollary_sq}{\begin{mdframed}\begin{corollary}}{\end{corollary}\end{mdframed}}
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\newenvironment{corollary_sq}[1][]{\begin{mdframed}\begin{corollary}[#1]}{\end{corollary}\end{mdframed}}
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\newenvironment{exercise_sq}[1][]{\begin{mdframed}\begin{exercise}[#1]}{\end{exercise}\end{mdframed}}
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\newcommand{\inv}[1]{#1^{-1}}
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\DeclarePairedDelimiter{\generator}{\langle}{\rangle}
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\DeclareMathOperator{\subgroup}{\leqslant}
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\DeclareMathOperator{\normalSubgroup}{\trianglelefteq}
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@@ -74,6 +78,7 @@
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\newcommand{\functiondef}[2]{\hspace{15pt}#1 \longmapsto #2}
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\newcommand{\otherwise}{\text{\lang{Sinon}{Otherwise}}}
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\DeclareMathOperator{\union}{\cup}
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\DeclareMathOperator{\distinctUnion}{\sqcup}
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\DeclareMathOperator{\Union}{\bigcup}
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\DeclareMathOperator{\intersection}{\cap}
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\DeclareMathOperator{\Intersection}{\bigcap}
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