ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Thu, 21 Nov 2013 01:23:52 +0100find homomorphismhttps://ask.sagemath.org/question/10756/find-homomorphism/let X={ a,b,c} with topology T= { empty set,{a},{a,b},{a,b,c,d} find all homomorphism f from x to x and justify that the list is exhaustiveTue, 19 Nov 2013 16:55:29 +0100https://ask.sagemath.org/question/10756/find-homomorphism/Comment by John Palmieri for <p>let X={ a,b,c} with topology T= { empty set,{a},{a,b},{a,b,c,d} find all homomorphism f from x to x and justify that the list is exhaustive</p>
https://ask.sagemath.org/question/10756/find-homomorphism/?comment=16668#post-id-16668Sage doesn't handle abstract topological spaces like this. If you worked at it, you could probably find something essentially equivalent, but it's probably better just to understand the underlying mathematics using paper and pencil. For questions like this, try http://math.stackexchange.com instead. I'm closing this question as off-topic.Thu, 21 Nov 2013 01:23:52 +0100https://ask.sagemath.org/question/10756/find-homomorphism/?comment=16668#post-id-16668