User Philip Brooker - MathOverflow

Philip Brooker

Member for 14 years, 6 months
Last seen this week

philipbrooker.wordpress.com
Canberra, Australia

28 Answers

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22 votes

Famous mathematical quotes

answered Dec 2, 2009 at 3:32

17 votes

Accepted

Isomorphisms of Banach Spaces

answered Oct 21, 2009 at 0:52

16 votes

Cartesian product of Banach spaces: all norms such that the inclusion is an isometry are equivalent?

answered Apr 11, 2020 at 12:03

14 votes

Accepted

Banach spaces $X$ with $\ell_2(X)$ not isomorphic to $L_2([0,1],X)$

answered Dec 2, 2015 at 12:24

13 votes

Never appeared forthcoming papers

answered Dec 6, 2010 at 23:35

13 votes

A separable Banach space and a non-separable Banach space having the same dual space?

answered Oct 6, 2011 at 18:59

11 votes

Accepted

Banach spaces whose second conjugates are separable

answered Sep 18, 2021 at 13:09

9 votes

Balls in spaces of operators

answered Oct 8, 2011 at 15:05

9 votes

Does "taking the dual space" stabilize?

answered Nov 16, 2010 at 5:02

8 votes

Famous mathematicians with background in arts/humanities/law etc

answered Sep 28, 2011 at 19:49

8 votes

Examples of non super-reflexive spaces

answered Oct 11, 2013 at 2:58

8 votes

Accepted

Continuous choice of Hahn-Banach extensions

answered Nov 28, 2011 at 13:29

8 votes

Accepted

What is a standard name for this kind of unconditional bases in Banach spaces?

answered Feb 14, 2018 at 2:11

7 votes

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Reflexive subspaces of bidual Banach spaces

answered Mar 24, 2018 at 19:21

7 votes

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Infinite dimensional subspaces of $L^1$

answered Oct 10, 2014 at 10:52

7 votes

Accepted

Subspaces of duals

answered Jul 24, 2011 at 13:24

7 votes

Books about history of recent mathematics

answered May 6, 2010 at 2:23

7 votes

Accepted

Closed, complemented subspaces of $l^1(X)$ when $X$ is uncountable

answered Nov 15, 2009 at 7:02

7 votes

Probabilistic proofs of analytic facts

answered Jan 1, 2010 at 3:07

6 votes

How to respond to "I was never much good at maths at school."

answered Nov 16, 2009 at 12:20

6 votes

When $2^\alpha = 2^\beta$ implies $\alpha=\beta$ ($\alpha,\beta$ cardinals)

answered Mar 5, 2010 at 3:30

6 votes

Accepted

Inner product of linear bounded operators between Hilbert spaces

answered Mar 10, 2012 at 2:37

6 votes

Accepted

Completeness of coefficient functionnals

answered Apr 2, 2020 at 22:01

5 votes

Accepted

Is every ideal part of an operator ideal?

answered Oct 14, 2015 at 20:35

4 votes

Can you prove equivalence without being able to calculate it?

answered Jan 9, 2010 at 10:45

3 votes

Weak*-closed and complemented subspaces of dual Banach spaces

answered Jun 24, 2012 at 5:30

3 votes

Accepted

A question on characterizing a Banach space containing no copy of $l_{1}$

answered Sep 28, 2015 at 22:27

2 votes

Accepted

Subalgebras of $B(E)$

answered Sep 29, 2012 at 22:57