Alyosha
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 Jun 16 awarded Notable Question May 11 accepted Closed form or asymptotic expansion for $\int_0^m \frac{n^x}{\Gamma(x+1)}dx$? Apr 27 revised An integration question to be solved without using differentiation under the integral sign. deleted 9 characters in body Mar 23 comment Dirac delta implies continuous? @Woodface I don't have a rigorous one. Mar 20 comment Show that there are only finitely many subgroups of $F$ in which $H$ can be of finite index. $F$ is free on how many generators? Mar 20 asked Dirac delta implies continuous? Mar 20 answered Is $\frac{\partial x}{\partial y}=\frac{\partial x}{\partial z}\frac{\partial z}{\partial y}$? Mar 20 comment Simple proof verification What does $\Gamma_i$ mean? Mar 15 comment Badly behaved, but easy-to-manipulate examples of rings to test hypotheses on @N.H. Oh, thanks! Maybe you could answer with an example if you have the time? Mar 15 asked Badly behaved, but easy-to-manipulate examples of rings to test hypotheses on Mar 14 revised If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? deleted 55 characters in body Mar 13 revised If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? added 4 characters in body Mar 12 comment 'Elementary' proof of $\tilde{X}$ is contractible iff $\pi_n(X) =0 \forall n \ge 2$. Sorry, why does it follow that $\pi_1(X)= \pi_1(\tilde{X})$ for $n \ge 2$? Mar 10 revised Is the pushforward measure a categorical-theoretic pushout? added 6 characters in body Mar 10 comment If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? The italics are directed not at anyone who has already answered, but at potential answerers. Mar 10 revised If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? added 49 characters in body Mar 9 revised If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? added 52 characters in body Mar 9 revised If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? [Edit removed during grace period] Mar 9 comment Discriminant is the unique invariant of $\text{SL}_2\mathbb{Z}$ acting on polynomials. Leox, this answer is actively detrimental to my attempts to understand this, in that having an answer reduces answerer-traffic, and this answer is basically a rephrasing of the question with the addition of 'some theorem proves it'. Please either delete this or at least provide a link to the proof of that result (I can't find a proof by googling). Thank you. Mar 9 comment If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense? Baire, measures or whatever are fine to use, this isn't a homework, but I doubt they will be that useful here, even if it feels a little Bairey.