# Continuum graph dynamics via population dynamics: well-posedness, duality and equilibria

arXiv (Cornell University)（2023）

摘要

In this paper we consider stochastic processes taking values in a set of continuum graphs we call graphemes, defined as equivalence classes of sequences of vertices labelled by N embedded in an uncountable Polish space (with the cardinality of the continuum), together with an N x N connection matrix with entries 0 or 1 specifying the absence or presence of edges between pairs of vertices. In particular, we construct a Markov process on a Polish state space G of graphemes suitable to describe the time-space path of countable graphs. The class of dynamics we propose arises by specifying simple rules for the evolution of finite graphs and passing to the limit of infinite graphs. The evolution of graphemes is characterised by well-posed martingale problems, and leads to strong Markov processes with the Feller property.

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关键词

population dynamics,continuum,graph,well-posedness

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