User el_tenedor

3 votes

1 answer

1k views

Post and Widder Inversion Formula for Laplace Transform

asked Dec 18, 2016 at 18:26

10 votes

2 answers

960 views

Why do we want or need cross-norms on tensor products?

asked Apr 14, 2017 at 17:16

2 votes

0 answers

77 views

Uniformly sectorial family: Differentiability of Resolvent

asked Aug 12, 2020 at 12:45

4 votes

1 answer

2k views

If $\exp(t(A + B)) = \exp(tA) \exp(tB)$ for all $t \geq 0$ then $A,B$ commute

asked Oct 30, 2016 at 12:56

0 votes

1 answer

1k views

Product of an $L^\infty$ function and an $L^1$ function is integrable

asked Aug 2, 2015 at 21:55

15 votes

2 answers

2k views

Simple proof that Fourier transform is an isomorphism between $L^p$ spaces for $p \neq 2$?

asked Aug 28, 2017 at 9:30

0 votes

2 answers

210 views

Does norm equivalence imply norm equivalence of induced operator norms?

asked Oct 19, 2018 at 13:38

4 votes

1 answer

637 views

Higher-order reflections: differentiable extensions for $C^k(\overline{\mathbb{R}_+})$ functions

asked Jul 26, 2017 at 14:33

2 votes

1 answer

983 views

Segment condition: Approximation of sobolev functions by functions which are smooth up to the boundary

asked Jul 24, 2017 at 13:47

4 votes

1 answer

1k views

Series of integrable functions converges pointwise almost everywhere

asked May 28, 2016 at 10:42

4 votes

1 answer

1k views

Considering operators on the direct sum of Hilbert spaces as operator valued matrices

asked Apr 2, 2017 at 15:29

2 votes

1 answer

342 views

Is every -representation of a unital commutative C-algebra non-degenerate?

asked Apr 15, 2017 at 13:03

4 votes

1 answer

368 views

*-homomorphism between concrete von Neumann algebras is SOT-SOT continuous iff it is WOT-WOT continuous

asked Feb 4, 2017 at 17:15

1 vote

1 answer

757 views

Characterisation of Murray-von Neumann equivalence of subprojections

asked Feb 24, 2017 at 11:21

4 votes

1 answer

235 views

Kaplansky's Parallelogram Law - Why is it called like that?

asked Apr 10, 2017 at 6:18

1 vote

0 answers

96 views

Closed graph theorem for operator topologies - Do operator topologies yield Fréchet spaces?

asked Mar 29, 2017 at 9:34

7 votes

0 answers

531 views

If locally convex topologies exhibit the same dual spaces, do they exhibit the same continuous linear operators?

asked Feb 6, 2017 at 10:09

9 votes

1 answer

605 views

Why is adjoining a unit the algebraic counterpart to the one point compactification?

asked Jan 5, 2017 at 11:05

3 votes

2 answers

215 views

Every Hausdorff-compactification of the reals corresponds to a C*-subalgebra of bounded continuous functions on $\mathbb{R}$

asked Mar 9, 2017 at 17:45

9 votes

2 answers

5k views

Is this a measure on the sigma algebra of countable and cocountable subsets of R?

asked Aug 16, 2015 at 10:18

9 votes

2 answers

480 views

Does the union of two not disjoint open balls always contain the line connecting the two centers?

asked Aug 20, 2016 at 11:03

5 votes

1 answer

997 views

Equivalence of definitions for $L_\infty$ norm via essential range and essential supremum

asked Jan 1, 2017 at 11:51

1 vote

3 answers

65 views

If a topological space is completely regular, can we assume the seperating function to be bounded?

asked Dec 27, 2016 at 9:16

1 vote

2 answers

292 views

Filter without cluster point, then the clopen members have empty intersection

asked Jan 7, 2016 at 15:51

0 votes

1 answer

59 views

Do $C^1$ domains share their outer normal field on the common part of their boundary

asked Oct 5, 2016 at 12:43

3 votes

0 answers

142 views

Is a boundary which consists of boundaries of balls Lipschitz?

asked Oct 9, 2016 at 14:09

1 vote

0 answers

451 views

Questions concerning Trace Theorem (Evans - PDE)

asked Sep 28, 2016 at 10:23

1 vote

1 answer

714 views

Equivalence of Sobolev Norms via Fourier Transformation

asked Sep 21, 2016 at 17:22

1 vote

1 answer

2k views

Compact embedding of $H_0^1$ into $C([0,1])$

asked Sep 19, 2016 at 21:47

2 votes

1 answer

118 views

Why does this sequence of measures of preimages converge to an integral?

asked Sep 17, 2016 at 16:15

Stack Exchange Network

64 Questions

Post and Widder Inversion Formula for Laplace Transform

Why do we want or need cross-norms on tensor products?

Uniformly sectorial family: Differentiability of Resolvent

If $\exp(t(A + B)) = \exp(tA) \exp(tB)$ for all $t \geq 0$ then $A,B$ commute

Product of an $L^\infty$ function and an $L^1$ function is integrable

Simple proof that Fourier transform is an isomorphism between $L^p$ spaces for $p \neq 2$?

Does norm equivalence imply norm equivalence of induced operator norms?

Higher-order reflections: differentiable extensions for $C^k(\overline{\mathbb{R}_+})$ functions

Segment condition: Approximation of sobolev functions by functions which are smooth up to the boundary

Series of integrable functions converges pointwise almost everywhere

Considering operators on the direct sum of Hilbert spaces as operator valued matrices

Is every -representation of a unital commutative C-algebra non-degenerate?

*-homomorphism between concrete von Neumann algebras is SOT-SOT continuous iff it is WOT-WOT continuous

Characterisation of Murray-von Neumann equivalence of subprojections

Kaplansky's Parallelogram Law - Why is it called like that?

Closed graph theorem for operator topologies - Do operator topologies yield Fréchet spaces?

If locally convex topologies exhibit the same dual spaces, do they exhibit the same continuous linear operators?

Why is adjoining a unit the algebraic counterpart to the one point compactification?

Every Hausdorff-compactification of the reals corresponds to a C*-subalgebra of bounded continuous functions on $\mathbb{R}$

Is this a measure on the sigma algebra of countable and cocountable subsets of R?

Does the union of two not disjoint open balls always contain the line connecting the two centers?

Equivalence of definitions for $L_\infty$ norm via essential range and essential supremum

If a topological space is completely regular, can we assume the seperating function to be bounded?

Filter without cluster point, then the clopen members have empty intersection

Do $C^1$ domains share their outer normal field on the common part of their boundary

Is a boundary which consists of boundaries of balls Lipschitz?

Questions concerning Trace Theorem (Evans - PDE)

Equivalence of Sobolev Norms via Fourier Transformation

Compact embedding of $H_0^1$ into $C([0,1])$

Why does this sequence of measures of preimages converge to an integral?