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ferhenk
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10 votes
2 answers
2k views

Closed subspace consisting of continuous functions in $L^{2}([0,1])$ is finite-dimensional

7 votes
1 answer
140 views

Existence of $L^1((0,1))$ functions which blow up on every open interval

6 votes
2 answers
665 views

Why is Banach-Alaoglu theorem so important?

3 votes
1 answer
343 views

Multiplicity of finite modules

2 votes
2 answers
211 views

A trigonometric non-linear differential equation

2 votes
0 answers
46 views

Tangent spaces and regular maps

1 vote
1 answer
85 views

$M_k(\Gamma_1(N)) = \bigoplus_{\chi \mod N} M_k(N, \chi)$

0 votes
2 answers
151 views

Grp and Ab are not equivalent as categories

0 votes
0 answers
38 views

$\mathcal{O}(t^{1+\varepsilon})$ asymptotics for Brownian motion with drift

0 votes
0 answers
51 views

Elementary question on wedging 2-forms

0 votes
0 answers
62 views

Why does the theta function appear in the study of complex tori?

0 votes
0 answers
64 views

Normal bundles and tubular neighborhoods