User Simon Henry

3 votes

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Grothendieck topologies on $\mathbb{C}$

answered Apr 4, 2016 at 13:33

2 votes

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Calculating greatest common divisor series: $\gcd(1,x)+\gcd(2,x)+\gcd(3,x)+....+\gcd(x,x)$

answered May 23, 2016 at 16:54

2 votes

The functional equation $T(x\otimes y)=T(x)\otimes T(y)$ on the matrix algebra

answered Apr 26, 2016 at 8:54

2 votes

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Stacks for the extensive topology?

answered Jan 3, 2017 at 18:51

2 votes

KMS-states of Bost-Connes type system

answered Mar 26, 2018 at 20:31

2 votes

Homomorphism to multiplier algebra of groupoid $C^\ast$-algebra

answered Apr 12, 2018 at 12:24

2 votes

Does every integer map generate a von Neumann algebra of type I?

answered Dec 30, 2017 at 12:42

2 votes

Is the Jordan decomposition of a self-adjoint functional constructive?

answered Jun 12, 2015 at 11:46

2 votes

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Infinite Determinant between different Hilbert Spaces

answered Aug 6, 2015 at 8:22

2 votes

Relative local compactness for locales?

answered Feb 9, 2016 at 14:21

2 votes

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Stone-Weierstrass, uniform convergence, and sums

answered Feb 16, 2016 at 13:07

2 votes

Problems where we can't make a canonical choice, solved by looking at all choices at once

answered Oct 10, 2013 at 7:58

2 votes

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Does positivity preserve compactness?

answered Mar 6, 2014 at 20:17

2 votes

Validity of equations in a topos

answered Apr 27, 2014 at 13:54

2 votes

C*-bimodules: the mess with definitions

answered Aug 17, 2014 at 9:19

2 votes

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Is an open map with open relative diagonal necessarily a local homeomorphism?

answered Apr 10, 2015 at 9:46

2 votes

Comparision of two $C^{*}$ algebras associated to a non vanishing vector field on a compact manifold

answered Apr 14, 2015 at 19:28

2 votes

Comprehension factorization for locally small categories

answered Mar 12, 2020 at 0:20

2 votes

Left Kan extension along Yoneda of pullback-preserving functor preserving pullbacks

answered Aug 21, 2019 at 0:06

2 votes

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Extending a monoid object in a category

answered Sep 13, 2020 at 13:58

2 votes

Characterize pullback functors among copresheaf-pra's

answered Jul 10, 2020 at 14:10

2 votes

What is the universal property of algebras for the codensity monad?

answered Feb 10, 2022 at 17:52

2 votes

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Does the monoidal structure on semisimplicial sets preserve fibrant objects?

answered May 25, 2021 at 16:25

2 votes

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Convergence of localic maps

answered Jun 22, 2021 at 13:28

2 votes

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Are the injections of a coproduct a cover in the canonical pretopology?

answered Nov 20, 2023 at 18:43

1 vote

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"Locally compact"-ly generated topological spaces

answered Jul 6 at 10:20

1 vote

Bousfield localization of a left proper accessible model category

answered Oct 22, 2022 at 18:14

1 vote

Can a 2-category be defined by an endofunctor?

answered Aug 2, 2022 at 12:15

1 vote

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Does a homotopy sheaf functor commute with group completion

answered Sep 5, 2019 at 15:18

1 vote

Set-theoretic forcing over sites?

answered Jan 22, 2015 at 8:47

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308 Answers

Grothendieck topologies on $\mathbb{C}$

Calculating greatest common divisor series: $\gcd(1,x)+\gcd(2,x)+\gcd(3,x)+....+\gcd(x,x)$

The functional equation $T(x\otimes y)=T(x)\otimes T(y)$ on the matrix algebra

Stacks for the extensive topology?

KMS-states of Bost-Connes type system

Homomorphism to multiplier algebra of groupoid $C^\ast$-algebra

Does every integer map generate a von Neumann algebra of type I?

Is the Jordan decomposition of a self-adjoint functional constructive?

Infinite Determinant between different Hilbert Spaces

Relative local compactness for locales?

Stone-Weierstrass, uniform convergence, and sums

Problems where we can't make a canonical choice, solved by looking at all choices at once

Does positivity preserve compactness?

Validity of equations in a topos

C*-bimodules: the mess with definitions

Is an open map with open relative diagonal necessarily a local homeomorphism?

Comparision of two $C^{*}$ algebras associated to a non vanishing vector field on a compact manifold

Comprehension factorization for locally small categories

Left Kan extension along Yoneda of pullback-preserving functor preserving pullbacks

Extending a monoid object in a category

Characterize pullback functors among copresheaf-pra's

What is the universal property of algebras for the codensity monad?

Does the monoidal structure on semisimplicial sets preserve fibrant objects?

Convergence of localic maps

Are the injections of a coproduct a cover in the canonical pretopology?

"Locally compact"-ly generated topological spaces

Bousfield localization of a left proper accessible model category

Can a 2-category be defined by an endofunctor?

Does a homotopy sheaf functor commute with group completion

Set-theoretic forcing over sites?