## Revista Matemática Iberoamericana

### Isoperimetry for spherically symmetric log-concave probability measures

Nolwen Huet

#### Abstract

We prove an isoperimetric inequality for probability measures $\mu$ on $\mathbb{R}^n$ with density proportional to $\exp(-\phi(\lambda |x|))$, where $|x|$ is the euclidean norm on $\mathbb{R}^n$ and $\phi$ is a non-decreasing convex function. It applies in particular when $\phi(x)=x^\alpha$ with $\alpha \ge 1$. Under mild assumptions on $\phi$, the inequality is dimension-free if $\lambda$ is chosen such that the covariance of $\mu$ is the identity.

#### Article information

Source
Rev. Mat. Iberoamericana, Volume 27, Number 1 (2011), 93-122.

Dates
First available in Project Euclid: 4 February 2011

Permanent link to this document
https://projecteuclid.org/euclid.rmi/1296828830

Mathematical Reviews number (MathSciNet)
MR2815733

Zentralblatt MATH identifier
1225.26035

#### Citation

Huet, Nolwen. Isoperimetry for spherically symmetric log-concave probability measures. Rev. Mat. Iberoamericana 27 (2011), no. 1, 93--122. https://projecteuclid.org/euclid.rmi/1296828830

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