Finite Approximations of Frobenius-Perron Operators. A Solution of Ulam's Conjecture to Multi-Dimensional Transformations

Document Type

Article

Publication Date

4-15-1996

Department

Physics and Astronomy

School

Mathematics and Natural Sciences

Abstract

We prove that Ulam's piecewise constant approximation algorithm is convergent for computing an absolutely continuous invariant measure associated with a piecewise C2 expanding transformation or a Jablonski transformation S: [0, 1]NRN → [0, 1]N. This solves an extension of Ulam's conjecture to multi-dimensions and generalizes the convergence result given by T.-Y. Li for one-dimensional transformations.

Publication Title

Physica D: Nonlinear Phenomena

Volume

92

Issue

1-2

First Page

61

Last Page

68

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