Ergodic convergence rates of Markov processes--eigenvalues, inequalities and ergodic theory

Details Ergodic convergence rates of Markov processes--eigenvalues, inequalities and ergodic theory Ergodic convergence rates of Markov processes--eigenvalues, inequalities and ergodic theory

2003-04-24

arxiv.org/abs/math/0304367v1

Proceedings of the ICM, Beijing 2002, vol. 3, 41--53

Mathematics

Probability

Scientific paper

This paper consists of four parts. In the first part, we explain what eigenvalues we are interested in and show the difficulties of the study on the first (non-trivial) eigenvalue through examples. In the second part, we present some (dual) variational formulas and explicit bounds for the first eigenvalue of Laplacian on Riemannian manifolds or Jacobi matrices (Markov chains). Here, a probabilistic approach--the coupling methods is adopted. In the third part, we introduce recent lower bounds of several basic inequalities; these are based on a generalization of Cheeger's approach which comes from Riemannian geometry. In the last part, a diagram of nine different types of ergodicity and a table of explicit criteria for them are presented. These criteria are motivated by the weighted Hardy inequality which comes from Harmonic analysis.

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