User Robert Furber

20 votes

Nonequivalent definitions in Mathematics

answered Nov 23, 2017 at 14:35

15 votes

Accepted

Is defining measures as functionals ever insufficiently general in practice?

answered Jan 29 at 16:34

14 votes

A topological vector space $X$ is separable if its dual space $X^*$ is separable?

answered Mar 31, 2020 at 15:35

13 votes

Accepted

Is there a measure on $[0,1]$ that is 0 on meagre sets and 1 on co-meagre sets

answered Sep 30, 2019 at 20:22

13 votes

Papers that debunk common myths in the history of mathematics

answered Feb 17, 2018 at 7:09

12 votes

Accepted

Unconditionally convergent series in some functional spaces

answered Dec 18, 2018 at 11:34

12 votes

Is there a connection between representation theory and PDEs?

answered Jun 30, 2019 at 11:52

12 votes

Accepted

Is $X\times X$ homeomorphic to $X$ for a space of probability measures?

answered Dec 7 at 11:35

11 votes

Who needs Replacement anyway?

answered Nov 18, 2022 at 14:15

10 votes

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Banach space with uncountable basis

answered Nov 20, 2022 at 16:52

9 votes

Example of a Mathematician/Physicist whose Other Publications during their PhD eclipsed their PhD Thesis

answered Mar 28, 2019 at 22:44

9 votes

A characterization of $L_1(\mu)$ in $L_\infty(\mu)^*$

answered May 28, 2018 at 2:18

9 votes

Accepted

Is any dual metrizable locally convex space a Frechet space?

answered Sep 1, 2017 at 0:13

8 votes

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Metrizable subspaces of separable spaces

answered Jun 23, 2018 at 22:54

8 votes

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Is the ring of $p$-adic integers extremally disconnected?

answered Apr 14, 2019 at 21:17

7 votes

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Equivalence of σ-convex hull and closed convex hull

answered Apr 15, 2020 at 16:50

7 votes

Accepted

Borel $\sigma$-algebra of a Borel subset

answered Sep 6, 2019 at 10:15

6 votes

Exponential objects in the category of measurable spaces

answered Jul 27, 2019 at 21:38

6 votes

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Examples of non-isomorphic $C^\ast$ algebras with isomorphic quasi-state spaces

answered Dec 10, 2018 at 17:00

6 votes

Accepted

A group where the Weil topology induced by the Haar measure does not coincide with the original topology

answered Sep 6, 2020 at 8:30

6 votes

Accepted

Is the preimage of a face under an affine map a face?

answered Aug 10, 2018 at 16:08

6 votes

About the category of von neumann algebras

answered Oct 24, 2017 at 22:47

6 votes

A combinatorial question about orthonormal bases

answered Apr 26, 2015 at 23:59

5 votes

Duality between Banach spaces and compact convex spaces

answered Oct 24, 2017 at 13:01

5 votes

Accepted

What is to Stone space of the free sigma-algebra on countably many generators?

answered Sep 11, 2018 at 0:48

5 votes

What's the maximum probability of associativity for triples in a nonassociative loop?

answered Oct 6, 2018 at 7:35

5 votes

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Sequence in -algebra with different limits for two C-norms?

answered Oct 17, 2018 at 15:38

5 votes

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Borel $\sigma$-algebra in $\beta \mathbb N \times \beta \mathbb N$

answered Oct 22, 2018 at 9:34

5 votes

Accepted

Is the compact-open topology on the dual of a separable Frechet space sequential?

answered Sep 16, 2018 at 14:19

5 votes

Book on Hilbert spaces, including non-separable

answered Apr 21 at 4:06

Stack Exchange Network

67 Answers

Nonequivalent definitions in Mathematics

Is defining measures as functionals ever insufficiently general in practice?

A topological vector space $X$ is separable if its dual space $X^*$ is separable?

Is there a measure on $[0,1]$ that is 0 on meagre sets and 1 on co-meagre sets

Papers that debunk common myths in the history of mathematics

Unconditionally convergent series in some functional spaces

Is there a connection between representation theory and PDEs?

Is $X\times X$ homeomorphic to $X$ for a space of probability measures?

Who needs Replacement anyway?

Banach space with uncountable basis

Example of a Mathematician/Physicist whose Other Publications during their PhD eclipsed their PhD Thesis

A characterization of $L_1(\mu)$ in $L_\infty(\mu)^*$

Is any dual metrizable locally convex space a Frechet space?

Metrizable subspaces of separable spaces

Is the ring of $p$-adic integers extremally disconnected?

Equivalence of σ-convex hull and closed convex hull

Borel $\sigma$-algebra of a Borel subset

Exponential objects in the category of measurable spaces

Examples of non-isomorphic $C^\ast$ algebras with isomorphic quasi-state spaces

A group where the Weil topology induced by the Haar measure does not coincide with the original topology

Is the preimage of a face under an affine map a face?

About the category of von neumann algebras

A combinatorial question about orthonormal bases

Duality between Banach spaces and compact convex spaces

What is to Stone space of the free sigma-algebra on countably many generators?

What's the maximum probability of associativity for triples in a nonassociative loop?

Sequence in -algebra with different limits for two C-norms?

Borel $\sigma$-algebra in $\beta \mathbb N \times \beta \mathbb N$

Is the compact-open topology on the dual of a separable Frechet space sequential?

Book on Hilbert spaces, including non-separable