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shuhalo
  • Member for 12 years, 7 months
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54 votes
9 answers
8k views

Motivation for and history of pseudo-differential operators

23 votes
1 answer
3k views

Why are viscosity solutions useful solutions?

20 votes
1 answer
2k views

Etymology of "exterior" in "exterior calculus"

17 votes
2 answers
863 views

Are unitarily equivalent permutation matrices permutation similar?

17 votes
1 answer
543 views

Are Hölder manifolds a thing?

16 votes
2 answers
3k views

Why are free objects "free"?

15 votes
1 answer
4k views

Intuition for the Hardy space $H^1$ on $R^n$

15 votes
4 answers
3k views

Einstein field equations in perspectives from PDE and functional analysis

14 votes
2 answers
828 views

Set-theoretical foundations of Mathematics with only bounded quantifiers

13 votes
1 answer
966 views

Regge calculus: Questions of consistency resolved?

11 votes
1 answer
2k views

Did human computers use floating-point arithmetics?

10 votes
4 answers
2k views

A senseful meaning of 'approximation of manifolds'?

9 votes
1 answer
593 views

Hilbert spaces are induced by a bilinear form. How about n-linear forms?

9 votes
2 answers
146 views

Generate polyhedra by collapsing vertices of a polyhedron

8 votes
3 answers
1k views

Tensor product of linear mappings versus chain complexes

7 votes
2 answers
6k views

Dual operators between Hilbert spaces: with or without Riesz representation

7 votes
4 answers
1k views

Reasonable "Random" matrices to test numerical algorithms

6 votes
0 answers
468 views

Minimum solid angle and aspect ratio of an $n$-simplex

5 votes
1 answer
411 views

Haar measure on $O(n)$ reduced to simpler probability space

5 votes
0 answers
508 views

Fibred manifolds with boundary

5 votes
3 answers
735 views

Topology on the set of linear subspaces

5 votes
1 answer
660 views

Does the norm of a normed linear space determine the form of its dual spaces elements?

5 votes
5 answers
3k views

A random walk matrix has eigenvalue 1 with multiplicty 1 - why?

5 votes
3 answers
603 views

Appropiate models of numerical computation

5 votes
1 answer
308 views

Multivariable higher-order chain rule

4 votes
1 answer
171 views

Can you pair $H^s(\Omega)$ and $H^{-s}(\Omega)$ on a domain $\Omega$?

4 votes
0 answers
379 views

Textbooks in differential geometry that treat $C^k$ manifolds

4 votes
1 answer
327 views

CW complex with generalized cells

4 votes
5 answers
2k views

Generalize Fourier transform to other basis than trigonometric function

4 votes
2 answers
636 views

Transpose of unbounded operators between Banach spaces.