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0 votes
0 answers
7 views

Two equivalent definitions of semisimplicity of group representations, proof by Zorn's lemma, a ``counterexample'' from the Fourier transform theory

15 votes
2 answers
1k views

Foundations of topology

1 vote
1 answer
95 views

An additive formula for the join of two projection operators

-1 votes
0 answers
6 views

Discrimination between set of distributions

0 votes
0 answers
5 views

Vector version of concentration of Lipshitz functions on sphere (Levy's Lemma)

2 votes
1 answer
70 views

Is there a simple expression for $\sum_{k =1}^{(p-3)/2} \frac{1\cdot 3\cdot \dots \cdot (2k-1)}{2\cdot 4 \cdot\dots \cdot2k\cdot(2k+1)}$ mod $p$?

2 votes
1 answer
66 views

Directed tour induced by traversing partition of a polygon

4 votes
1 answer
2k views

A question on pull back of a nef and big divisor

2 votes
0 answers
32 views

Maximal subsets of affine or projective space with no three collinear points

0 votes
0 answers
56 views
+50

Understanding a constant $c>0$ in a problem on mutually avoiding sets of points and lines

15 votes
3 answers
1k views

Optimal inspection path on a sphere

5 votes
1 answer
368 views

About semiprimal representations of $1$

4 votes
1 answer
320 views

How to get by with only functorial cylindrical objects?

0 votes
1 answer
56 views

How to prove this (corollary of) hyperplane separation theorem?

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