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Guillaume Aubrun

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Name	Guillaume Aubrun
Member for	3 years
Seen	yesterday
Website	math.univ-lyon1.fr/~aubrun
Location	Lyon, France
Age	32

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3

Questions

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12

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Orthogonal matrices with small entries

co.combinatorics matrices

aug 29 10 at 17:21 Richard Stanley 13.6k●2●60●94

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12

votes

2

answers

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Isoperimetric-like inequality for non-convex sets

isoperimetry plane-geometry mg.metric-geometry integral-geometry

oct 12 11 at 22:12 Anton Petrunin 16.6k●42●110

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answers

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Polynomial upper approximation with respect to the Gaussian measure

ca.analysis-and-odes polynomials approximation-theory

nov 29 10 at 14:19 Nate Eldredge 5,814●24●48

7

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What’s a nice argument that shows the volume of the unit n-ball in R^n approaches 0?

Euclidean volume of the unit ball of matrices under the matrix norm

volume of the unit ball of the Banach space $\ell_1^n\otimes_{\epsilon}\ell_1^n$?

Characterizing the Radon transforms of log-concave functions

The volume of the “unit ball” in $\mathbb{R}^{m\times n}$ with respect to the cut norm

How long for a simple random walk to exceed sqrt(T)?

Pinching and positive definite matrices

125

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120

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