Reputation
2,316
Top tag
Next privilege 2,500 Rep.
Create tag synonyms
Badges
1 10 36
Impact
~70k people reached

Jun
23
comment Prove that for $\alpha$ an ordinal, $\alpha \le \omega^\alpha$.
Aha, thanks. I see.
Jun
23
comment Prove that for $\alpha$ an ordinal, $\alpha \le \omega^\alpha$.
My non-understanding lies elsewhere: why does the result follow from this?
Jun
23
asked Prove that for $\alpha$ an ordinal, $\alpha \le \omega^\alpha$.
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