shuhalo's user avatar
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shuhalo
  • Member for 14 years, 4 months
  • Last seen more than a month ago
58 votes
9 answers
9k views

Motivation for and history of pseudo-differential operators

26 votes
1 answer
4k views

Why are viscosity solutions useful solutions?

23 votes
1 answer
2k views

Etymology of "exterior" in "exterior calculus"

19 votes
1 answer
4k views

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

18 votes
1 answer
706 views

Are Hölder manifolds a thing?

17 votes
2 answers
976 views

Are unitarily equivalent permutation matrices permutation similar?

17 votes
2 answers
3k views

Why are free objects "free"?

16 votes
4 answers
3k views

Einstein field equations in perspectives from PDE and functional analysis

14 votes
2 answers
930 views

Set-theoretical foundations of Mathematics with only bounded quantifiers

13 votes
1 answer
1k 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
684 views

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

9 votes
3 answers
2k views

Tensor product of linear mappings versus chain complexes

9 votes
2 answers
149 views

Generate polyhedra by collapsing vertices of a polyhedron

8 votes
2 answers
609 views

Multivariable higher-order chain rule

7 votes
2 answers
642 views

What happens if we consider functions of bounded variation that are not in $L^1$?

7 votes
2 answers
7k 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
482 views

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

6 votes
2 answers
718 views

Transpose of unbounded operators between Banach spaces.

5 votes
1 answer
3k views

Inner product of linear bounded operators between Hilbert spaces

5 votes
1 answer
496 views

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

5 votes
0 answers
593 views

Fibred manifolds with boundary

5 votes
3 answers
793 views

Topology on the set of linear subspaces

5 votes
1 answer
671 views

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

5 votes
5 answers
4k views

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

5 votes
3 answers
621 views

Appropiate models of numerical computation

4 votes
5 answers
3k views

Generalize Fourier transform to other basis than trigonometric function

4 votes
1 answer
189 views

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