mweiss
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 Sep 24 awarded Autobiographer Sep 18 comment Examples of intuition from fields other than Physics to solve math problems @Olivier - It has been a while since I read the Aczel book, but the impression I got from it was that Bourbaki was part of the Structuralist movement, and that the influence went in both directions simultaneously. I may be misremembering -- and even if I am remembering correctly, I can't vouch for the accuracy of Aczel's account. It did seem to me at the time that Aczel was exaggerating the connection between Bourbaki and the Structuralists to make a better story. Sep 17 awarded Teacher Sep 17 answered Examples of intuition from fields other than Physics to solve math problems Mar 31 awarded Quorum Mar 22 awarded Yearling Mar 21 awarded Nice Question Mar 21 awarded Supporter Mar 21 accepted Rings for which no polynomial induces the zero function Mar 21 comment Rings for which no polynomial induces the zero function Let $R$ be the ring $\mathbb{Z}/p \mathbb{Z}$ with infinitely many elements $u_i$ adjoined, each satisfying the relation $u_i^p -u_i = 0$. Then the polynomial $p=x^p-x$ satisfies $\hat{p}=0$. Mar 21 comment Rings for which no polynomial induces the zero function P Vanchinathan, yes, that was one of my examples. More precisely if $R$ is a ring that has my desired property, than $R \times R$ also has the desired property, even though it is not a domain. So that shows that "infinite domain" is not necessary for this property. Mar 21 awarded Editor Mar 21 revised Rings for which no polynomial induces the zero function added 10 characters in body Mar 21 asked Rings for which no polynomial induces the zero function Oct 21 comment Lost soul: loneliness in pursing math. Advice needed. When I was in my 1st year of grad school I got married; in my 3rd year we had our first child. I missed a lot of classes, and a lot of deadlines, and was worried that he consequences might be dire. But my professors all -- all, without exception -- told me not to worry: "Some things are more important than math", said one, and that advice has kept me (reasonably) sane and balanced. I hope it helps you too. Oct 15 comment A weird function related to the denominators of rational squares Only in the most elementary case: \sigma (a) = 2 iff $a=n^2 + n$ for some $n$. Oct 12 awarded Scholar Oct 12 comment A weird function related to the denominators of rational squares Thanks -- those citations will be very helpful, I think. I am a total newbie when it comes to the OEIS; is there a way to search for papers / pages that discuss or reference a specific OEIS sequence? Oct 12 accepted A weird function related to the denominators of rational squares Oct 12 comment A weird function related to the denominators of rational squares Plus I've got a list of 20 special cases that have the form: If $a=n^2 +$ [something], then $\sigma (a) =$ [some specific linear polynomial in n with simple coefficiets]. But I can't find a way to tie those 20 special cases together into a general statement.