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silvascientist

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group-theory

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31 posts edited
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1,233 votes cast
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17 Questions

Votes Activity Newest Views
7
40
votes
3
answers
9k
views

What does the antiderivative of a continuous-but-nowhere-differentiable function “look like”?

calculus real-analysis
Jun 11 '14 at 11:05 jwg 2,568
18
19
votes
3
answers
5k
views

How to understand intuitively the Stolz-Cesaro Theorem for sequences?

real-analysis sequences-and-series intuition
Feb 14 '15 at 15:49 Markus Scheuer 84.1k
8
14
votes
6
answers
29k
views

How to prove the Squeeze Theorem for sequences

real-analysis limits
Aug 15 at 11:46 Dapianoman 314
4
13
votes
2
answers
1k
views

“Every open cover admits an open locally finite refinement” - can this refinement always be realized in terms of basis sets?

general-topology
Jun 26 '19 at 18:29 Mirko 11.7k
7
13
votes
3
answers
1k
views

Why do natural transformations express the fact that a vector space is canonically embedded in its double-dual but not in its dual?

vector-spaces category-theory intuition
Feb 22 '17 at 10:23 Community♦ 1
3
6
votes
3
answers
499
views

Can the directional derivative fail to be linear?

real-analysis multivariable-calculus
May 17 '16 at 5:42 Community♦ 1
2
5
votes
1
answer
227
views

Connecting a vector space to its dual - why?

linear-algebra vector-spaces intuition
May 16 '16 at 13:48 LMZ 557
3
4
votes
0
answers
2k
views

How to show localization commutes with finite products/arbitrary coproducts?

abstract-algebra modules localization
Mar 15 '16 at 7:51 Community♦ 1
 
4
votes
1
answer
110
views

Boundedness in uniform spaces?

general-topology uniform-spaces
Sep 1 '15 at 17:45 Dominik 18.6k
 
3
votes
2
answers
541
views

Why is the domain of convergence of a power series a perfect disk?

calculus analysis power-series
Jun 13 '14 at 2:08 lhf 200k
1
2
votes
2
answers
157
views

On Riesz Representation and containment of the $L^p$ spaces when $E$ has finite measure

real-analysis functional-analysis lebesgue-integral lp-spaces
Mar 2 '17 at 20:45 silvascientist 3,361
1
2
votes
1
answer
65
views

Can we find a regular ($C^k$) parametrization for this surface?

multivariable-calculus differential-geometry surfaces parametrization
May 17 '16 at 1:15 levap 55.6k
 
2
votes
1
answer
102
views

Chasing the diagram of a natural transformation - I'm lost, please help

vector-spaces category-theory
Sep 12 '15 at 5:49 silvascientist 3,361
1
2
votes
1
answer
134
views

How to relate algebraic properties of the fundamental group to the topological properties of a space

algebraic-topology intuition
Feb 4 '15 at 8:10 Qiaochu Yuan 341k
1
1
vote
1
answer
85
views

Easily visualizable examples of Lie groupoids?

lie-groups smooth-manifolds groupoids
Mar 24 '17 at 9:20 Pedro 5,487
1
1
vote
0
answers
255
views

How to understand the geometry of bilinear forms that are not positive-definite?

reference-request vector-spaces intuition bilinear-form
Sep 4 '15 at 21:35 silvascientist 3,361
 
0
votes
1
answer
29
views

Let $E$ be a TVS over $\mathbb R$ or $\mathbb C$ such that $\overline{\lbrace 0 \rbrace} = E$. Does $E$ carry the trivial topology?

topological-vector-spaces
Dec 28 '16 at 20:46 Eric Wofsey 262k
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