User:Boris Tsirelson

Professor of mathematics. Obtained my M.S. from the university of Leningrad; stayed in Leningrad to pursue my graduate studies, finishing my PhD in 1975. Made contributions to probability theory and functional analysis. They include:

   * Tsirelson's bound, in quantum mechanics, is an inequality, related to issues of nonlocality and hidden variables.
   * Tsirelson space is an example of a reflexive Banach space in which neither a lp space nor a c0 space can be embedded.
   * The Tsirelson drift, a counterexample in the theory of stochastic differential equations.
   * Gaussian isoperimetric inequality (proved by V. Sudakov, B. Tsirelson, and independently by Ch. Borell), stating that affine halfspaces are the isoperimetric sets for the Gaussian measure.