Here the authors are interested in the zero set of Sobolev functions and functions of bounded variation with negative po......

Lott,Sturm和Villani给出了度量测度空间Ricci曲率下界的定义,之后Ambrosio,Gigli和Savare又将Jordan,Kinderlehrer和Otto的欧式空......

We give a two sided estimate on the spectral gap for the Boltzmann measures μh on the circle.We prove that the spectral......