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| View Original: | An-Sn-covering-groups.svg (360x217) | |||
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| Keywords: An-Sn-covering-groups.svg Commutative diagram connecting the covering groups of the alternating and symmetric groups Own work by Nils R Barth 2009-11-17 Nils R Barth Released into the public domain by the author TeX source TeX source produced as detailed at meta Help Displaying a formula Commutative diagrams <source lang latex > \documentclass amsart \usepackageall ps xy Loading the XY-Pic package Using postscript driver for smoother curves \usepackage color For invisible frame \begin document \thispagestyle empty No page numbers \SelectTips eu Euler arrowheads tips \setlength \fboxsep 0pt Frame box margin \color white \framebox \color black Frame for margin \xymatrix 6pt \ \pm 1\ \ar -> /_1pc/ddl \ar _ -> / 1pc/ddr \\ \\ 2 \cdot A_n \ar ->> dd \ar -> rr 2 \cdot S_n \pm \ar ->> dd \ar ->> / 1pc/rrd \\ \ \pm 1\ \\ A_n \ar -> rr S_n \ar ->> /_1pc/rru \operatorname sgn end math end frame \end document </source> cc-zero Permutations Commutative diagrams Xy-pic diagrams Images with LaTeX source code | ||||
