Young Researchers' Seminar

Ergodicity of the Martin boundary of the Young–Fibonacci graph

by Mr Vsevolod Evtushevskiy (SPbU)

Europe/Moscow
201 (SPbU Math & CS Dept)

201

SPbU Math & CS Dept

Description

Among central measures on the path space of the Young–Fibonacci lattice the so-called Plancherel measure has a special role. Its ergodicity was proved by Kerov and Gnedin. The goal of this paper is to prove that remaining measures from the Martin boundary of this graph (which were described by Kerov and Goodman) are also ergodic. The measures are parametrized with an infinite word of digits 1 and 2 and the parameter β∈(0,1] (the case β=0 corresponds to the Plancherel measure).