Since I'm looking for a way to relate graphs with codes, I was happilly surprised, to find the following: In What is a zeta function?, Chap. 2.1. Functional equation: $$...\zeta_{{G}}(1/qT)=\left(q^2T^2\frac{1-T^2}{1-q^2T^2}\right)^{\#E-\#V} (qT^2)^{\#V}\zeta_{{G}}(T),... $$ Let's remark...
Let $R$ be a ring with $1$. We say that $a,b\in R$ are associate if $a|b$ and $b|a$, i.e. there exist $r,s\in R$ such that $a=rb$ and $b=sa$. This is an equivalence relation on $R$, and I would like to know if the quotient set $R/\sim$ (where $a\sim b$ when $a$ and $b$ are associate) has interest...
The question is already here (what is so great about having an invariant measure?), I was also interested in the same question, what I would say to a non-mathematician, that why one would be interested to know whether invariant measure exists or not, why one would be interested in preserving pr...
Proposal: rename quasiperiodic-functions to quasiperiodicity. Reason: posts tagged quasiperiodic-functions may also be tagged quasiperiodicity, but the reverse is not always true (ie. posts on quasiperiodic tiling or oscillations). Because none of these topics get much attention, there should be...
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