Professor, mathematics department, University of Ottawa

interested in ordered K$_0$ groups, Choquet theory, matrices, algebraic and functional analytic aspects of Markov chains, random walks and their friends, classification of ergodic transformations (all these are basically the same subject!), .... See ArXiv for some recent preprints and papers.

Also interested in postal history, especially Canadian, and also worldwide avis de réception. See for some of my articles and exhibits.

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