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math.PR2020
Edgeworth expansions for centered random walks on covering graphs of polynomial volume growth
Ryuya Namba
Edgeworth expansions for random walks on covering graphs with groups of polynomial volume growths are obtained under a few natural assumptions. The coefficients appearing in this e…
math.FA2020★ 2 cited
Rate of convergence in Trotter's approximation theorem and its applications
Ryuya Namba
The celebrated Trotter approximation theorem provides a sufficient condition for the convergence of a sequence of operator semigroups in terms of the corresponding sequence of infi…