Klaus Draeger
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 Nov 3 revised Duality between Compactness and Hausdorffness replaced some occurrences of "must not" where "need not" was meant Nov 3 suggested approved edit on Duality between Compactness and Hausdorffness Oct 22 answered Number and asymptotic for cyclic sequences Jul 29 comment Decomposition of a regular graph and connected subgraphs Yes, that is right. Jul 28 revised Decomposition of a regular graph and connected subgraphs added 971 characters in body Jul 28 comment Decomposition of a regular graph and connected subgraphs That would be true if you required your graph to be transitive, but I don't see how mere regularity gets you there. Jul 28 comment Decomposition of a regular graph and connected subgraphs The comments on my answer lead me to wonder: is the condition on the successive decompositions supposed to hold for every possible choice of the $x_i$, or just for one? Jul 28 revised Decomposition of a regular graph and connected subgraphs added 24 characters in body Jul 28 answered Decomposition of a regular graph and connected subgraphs Jul 27 awarded Critic Jul 27 awarded Citizen Patrol Dec 2 comment Characterizing orthants with polynomials It does sound familiar, but all I could find was this question on math.se: math.stackexchange.com/questions/966633/… Oct 29 awarded Editor Oct 29 revised Find all faces in a graph from list of edges deleted 7 characters in body Oct 29 answered Find all faces in a graph from list of edges Sep 22 comment Characterization of a subset of [0,1] $II$ Given the possibility of excluding arbitrary countable subsets, I guess the restriction has to be that for $t\in T, t\neq 1$, the intersection $T\cap[t,t+\delta]$ must be uncountable for all $\delta>0$. Jan 29 answered Is there a dense rational sequence of positive separation? Jan 16 comment An extension of the real semiring with multiple degrees of infinity I still don't quite get the "dominance" property of divisibility; assuming $(a/b)*b$ should be $a$, your second example gives $2^*=1^*+2^*$, so that either $1^*=0$, or your semiring is not cancellable - are you ok with the latter? Oct 11 awarded Caucus Oct 11 awarded Constituent