Gerry Myerson
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 8h comment Undergrad : decomposition of an integer as sum, with constraints If $k$ is fixed, this is a standard (albeit messy, for large $k$) undergrad discrete math question, and not suitable for MO, where we deal with questions of math research. 2d comment Why are these two gamma functions equal? What does $\theta$ mean? 2d comment number of maximal subgroups of the symmetric group Are you interested in oeis.org/A066115 "Number of conjugacy classes of maximal subgroups of the symmetric group $S_n$? Nov 22 comment Which popular games are the most mathematical? @Nate, I'm not familiar with Numberwang, but here are the rules for Finchley Central: "Players take turns to name London Underground stations: the first one to say Finchley Central'' wins." Nov 19 comment Generating function for number of different tessellation checkered rectangle Also posted to m.se, with no mention on either site. math.stackexchange.com/questions/1533637/… Nov 18 comment On the mixed sum of three k-th powers Related question posted to m.se, math.stackexchange.com/questions/1524797/… Nov 17 comment Generating function for number of different tessellation checkered rectangle What is a checkered rectangle, and how does it differ from an uncheckered rectangle? Nov 17 comment Is there a “complete” Sidon sequence? I think you're asking for an asymptotic basis for the integers of order 2, such that no number has more than one representation. Erdos conjectured that on the contrary in any such basis the number of representations is unbounded. I don't have Guy, Unsolved Problems In Number Theory handy, but if I did, that's the first place I'd look. In the meantime, you'll want to look at en.wikipedia.org/wiki/Erdős–Turán_conjecture_on_additive_bases Nov 17 comment Is being rational decidable? I suppose $\pi+e$ is defined by a finite system of equations etc., etc., and I don't think anyone has a finite procedure for determining whether it's rational. Nov 16 revised Fermat-Wiles “first case” in extensions of cyclotomic fields typo Nov 15 comment Comparing really big numbers There are some small numbers for which it is very difficult to decide which one is bigger, e.g., one-half, and the number of zeros of the zeta function in the critical strip but off the critical line. Nov 15 awarded Notable Question Nov 13 revised Equation $x^2=y^p + 1$ edited tags Nov 12 comment Authorship and the exact wording of a quote about mathematics Are you thinking of this: mathoverflow.net/questions/7155/famous-mathematical-quotes/… Nov 11 revised How To Present Mathematics To Non-Mathematicians? edited tags Nov 11 comment density of distance between points in unit circles MO is for math research questions. Is there a research angle to this question? Nov 10 comment Product and convex combination of two stochastic matrices @Iosif, let $C$ be the permutation matrix representing the 5-cycle $(12345)$ in $S_5$. Then $2A=C+C^4$, $2B=C^2+C^3$, and $(C+C^4)(C^2+C^3)=(C+C^4)+(C^2+C^3)$ because $C^5=1$. Nov 10 comment Product and convex combination of two stochastic matrices Does this guarantee zeros on the diagonal of $K_2$? Nov 10 comment Radical of the sum $=$ radical of the product If $k$ is odd, then $1+1+\cdots+1+2+k=1\cdot1\cdots2\cdot k$, where there are $k-2$ ones on each side. Nov 10 answered Product and convex combination of two stochastic matrices