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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.
Mar
9
asked If $S_\epsilon$ is dense for all $\epsilon$, is $S_0$ dense?