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ε-δ
  • Member for 13 years, 5 months
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52 votes
1 answer
5k views

Open map D⁴ → S²

23 votes
5 answers
28k views

What is the standard notation for group action

23 votes
12 answers
17k views

A book in topology

20 votes
5 answers
17k views

Pushforward and pullback.

17 votes
3 answers
3k views

Nonseparable example in dimension theory?

12 votes
2 answers
958 views

Helly theorem + Nerve

11 votes
2 answers
739 views

Isoperimetric inequality in complex hyperbolic space

11 votes
0 answers
490 views

The cones for Bochner–Lichnerowicz–Weitzenböck formula

10 votes
1 answer
1k views

Solution of linear ODE

9 votes
5 answers
2k views

A survey on positive mass theorem?

9 votes
3 answers
2k views

Approximation by locally Lipschitz functions

8 votes
3 answers
652 views

Any PL-homology-manifold is homotopy equivalent to a manifold

7 votes
1 answer
541 views

Continuous extensions reals and to p-adic numbers

6 votes
4 answers
2k views

notation for finite sequence with one element is removed [closed]

6 votes
2 answers
796 views

A dual theory to the theory of currents?

6 votes
3 answers
342 views

Visualizing a graph

5 votes
1 answer
387 views

Negative pinching and Ricci flow

4 votes
1 answer
776 views

Example in dimension theory

4 votes
1 answer
791 views

Topological dimension, is it local?

2 votes
3 answers
3k views

Mid point with set square?

2 votes
1 answer
315 views

Ricci-invariant class of metrics