User shuhalo

54 votes

9 answers

8k views

Motivation for and history of pseudo-differential operators

asked Mar 21, 2011 at 17:20

23 votes

1 answer

3k views

Why are viscosity solutions useful solutions?

ap.analysis-of-pdes viscosity-solutions

asked Mar 24, 2011 at 17:12

20 votes

1 answer

2k views

Etymology of "exterior" in "exterior calculus"

soft-question ho.history-overview exterior-algebra etymology

asked Mar 8, 2017 at 1:03

17 votes

2 answers

863 views

Are unitarily equivalent permutation matrices permutation similar?

gr.group-theory matrix-theory

asked Dec 10, 2019 at 14:33

17 votes

1 answer

543 views

Are Hölder manifolds a thing?

dg.differential-geometry differential-topology

asked Dec 22, 2019 at 9:15

16 votes

2 answers

3k views

Why are free objects "free"?

ct.category-theory ho.history-overview terminology

asked Oct 29, 2017 at 6:47

15 votes

1 answer

4k views

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

harmonic-analysis fa.functional-analysis intuition ca.classical-analysis-and-odes

asked Jan 18, 2011 at 8:50

15 votes

4 answers

3k views

Einstein field equations in perspectives from PDE and functional analysis

ap.analysis-of-pdes mp.mathematical-physics regularity general-relativity

asked Jul 13, 2013 at 15:15

14 votes

2 answers

828 views

Set-theoretical foundations of Mathematics with only bounded quantifiers

set-theory lo.logic mathematical-philosophy

asked Apr 7, 2019 at 16:40

13 votes

1 answer

966 views

Regge calculus: Questions of consistency resolved?

mp.mathematical-physics general-relativity na.numerical-analysis

asked Mar 22, 2011 at 14:12

11 votes

1 answer

2k views

Did human computers use floating-point arithmetics?

ho.history-overview na.numerical-analysis

asked Jan 5, 2021 at 16:06

10 votes

4 answers

2k views

A senseful meaning of 'approximation of manifolds'?

approximation-theory manifolds reference-request

asked Dec 13, 2010 at 9:32

9 votes

1 answer

593 views

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

fa.functional-analysis linear-algebra

asked Dec 5, 2009 at 2:09

9 votes

2 answers

146 views

Generate polyhedra by collapsing vertices of a polyhedron

gr.group-theory discrete-geometry convex-polytopes

asked Aug 31, 2015 at 18:55

8 votes

3 answers

1k views

Tensor product of linear mappings versus chain complexes

linear-algebra homological-algebra hopf-algebras tensor-products

asked Apr 7, 2012 at 21:11

7 votes

2 answers

6k views

Dual operators between Hilbert spaces: with or without Riesz representation

fa.functional-analysis hilbert-spaces linear-algebra

asked Jul 23, 2011 at 2:54

7 votes

4 answers

1k views

Reasonable "Random" matrices to test numerical algorithms

na.numerical-analysis algorithms applied-mathematics soft-question

asked Dec 31, 2010 at 18:37

6 votes

0 answers

468 views

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

mg.metric-geometry convex-polytopes euclidean-geometry

asked Feb 28, 2012 at 22:58

5 votes

1 answer

411 views

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

pr.probability haar-measure lie-groups

asked Jun 11, 2013 at 16:26

5 votes

0 answers

508 views

Fibred manifolds with boundary

fibre-bundles differential-topology dg.differential-geometry

asked Dec 8, 2011 at 23:42

5 votes

3 answers

735 views

Topology on the set of linear subspaces

gn.general-topology fa.functional-analysis topological-vector-spaces

asked Jan 9, 2011 at 17:37

5 votes

1 answer

660 views

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

fa.functional-analysis

asked Jun 14, 2010 at 13:23

5 votes

5 answers

3k views

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

graph-theory linear-algebra co.combinatorics

asked Nov 25, 2009 at 21:19

5 votes

3 answers

603 views

Appropiate models of numerical computation

na.numerical-analysis computer-science

asked Mar 9, 2011 at 23:56

5 votes

1 answer

308 views

Multivariable higher-order chain rule

co.combinatorics multivariable-calculus

asked Dec 16, 2020 at 16:33

4 votes

1 answer

171 views

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

fa.functional-analysis sobolev-spaces topological-vector-spaces

asked May 10, 2015 at 11:46

4 votes

0 answers

379 views

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

reference-request dg.differential-geometry textbook-recommendation

asked Dec 7, 2017 at 18:54

4 votes

1 answer

327 views

CW complex with generalized cells

reference-request gt.geometric-topology cw-complexes

asked Jun 3, 2014 at 17:20

4 votes

5 answers

2k views

Generalize Fourier transform to other basis than trigonometric function

fa.functional-analysis fourier-analysis

asked Nov 27, 2009 at 21:47

4 votes

2 answers

636 views

Transpose of unbounded operators between Banach spaces.

banach-spaces fa.functional-analysis unbounded-operators

asked Mar 4, 2012 at 13:07

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65 Questions

Motivation for and history of pseudo-differential operators

Why are viscosity solutions useful solutions?

Etymology of "exterior" in "exterior calculus"

Are unitarily equivalent permutation matrices permutation similar?

Are Hölder manifolds a thing?

Why are free objects "free"?

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

Einstein field equations in perspectives from PDE and functional analysis

Set-theoretical foundations of Mathematics with only bounded quantifiers

Regge calculus: Questions of consistency resolved?

Did human computers use floating-point arithmetics?

A senseful meaning of 'approximation of manifolds'?

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

Generate polyhedra by collapsing vertices of a polyhedron

Tensor product of linear mappings versus chain complexes

Dual operators between Hilbert spaces: with or without Riesz representation

Reasonable "Random" matrices to test numerical algorithms

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

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

Fibred manifolds with boundary

Topology on the set of linear subspaces

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

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

Appropiate models of numerical computation

Multivariable higher-order chain rule

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

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

CW complex with generalized cells

Generalize Fourier transform to other basis than trigonometric function

Transpose of unbounded operators between Banach spaces.