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For a measure $\mu$ supported on a convex body $K$, what are the conditions on $\mu$ and $K$ to satisfy a Log-Sobolev inequality of the form: $$\int f^{2} \log f^{2}\,d\mu -\int f^{2}\,d\mu \log\left(\int f^{2}\,d\mu\right)\leq \frac{2}{c}\int |\nabla f|^{2}d\mu,$$ for all $f\in C^{1}(K)$ ?

I would appreciate any reference or a solution for the above question.

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  • $\begingroup$ Is that log(f^2) or (log(f))^2? $\endgroup$ Commented Oct 3, 2019 at 18:54
  • $\begingroup$ @DarshRanjan It's $\log(f^2)$. $\endgroup$
    – MaoWao
    Commented Oct 4, 2019 at 8:38

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