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Timeline for Inverses in convolution algebras

Current License: CC BY-SA 2.5

11 events
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Jan 31, 2020 at 17:59 history edited YCor
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Jul 1, 2012 at 22:26 comment added Yemon Choi Returning to this after a long gap, just in case you have any residual interest: it turns out that on any unimodular $G$, if you have a and b in C_c(G) such that $a*b=a+b$, then $b*a=a+b$. So now take $a=e-f$ and $b=e-g$, with $e,f,g$ as in your question, then this seems to answer your question in the positive. See Theorem 3.6 of arxiv.org/abs/1205.4354
Nov 19, 2009 at 17:08 vote accept D. Savitt
Nov 19, 2009 at 17:07 vote accept D. Savitt
Nov 19, 2009 at 17:07
Nov 19, 2009 at 1:59 comment added D. Savitt I certainly intended compact open subgroup, at any rate.
Nov 19, 2009 at 1:12 comment added Yemon Choi Daft/ignorant question: does the countability hypothesis on the double coset space force $K$ to be open in $G$?
Nov 19, 2009 at 1:07 answer added Yemon Choi timeline score: 4
Nov 18, 2009 at 23:45 history edited D. Savitt CC BY-SA 2.5
deleted trivially false first part of the question
Nov 18, 2009 at 23:44 answer added Kevin Buzzard timeline score: 2
Nov 18, 2009 at 23:41 answer added S. Carnahan timeline score: 2
Nov 18, 2009 at 23:32 history asked D. Savitt CC BY-SA 2.5