Keywords: CDT 3a.png Coxeter-Dynkin diagram symbol Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Sreejithk2000 using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper <br/> Original text I Tom Ruen talk created this work entirely by myself 09 05 14 March 2010 UTC <br/> original upload log page en wikipedia CDT_3a png 2010-03-14 09 05 Tomruen 12×48× 238 bytes <nowiki> Coxeter-Dynkin diagram symbol I ~~~ created this work entirely by myself ~~~~~ ~~~ </nowiki> Coxeter groups Euclidean geometry Coxeter-Dynkin diagrams |