Quasi-stationary extinction-event conjecture

From papers

Let μN\mu_N be the quasi-stationary distribution of the Markov chain, let EN\mathcal E_N be the extinction event defined in Theorem~, and let PμNP_{\mu_N} denote probability when the initial state has distribution μN\mu_N. Assume the conditions of Theorem~.

Quasi-stationary extinction-event conjecture.

limNPμN(EN)=1.\lim_{N\to\infty}P_{\mu_N}(\mathcal E_N)=1.

The paper states that this is almost equivalent to the preceding conjecture's asymptotic formula for 1λN1-\lambda_N, via the probability that the chain exits through the set of vertices indexed by the fittest types. It is presented as an equivalent reformulation and remains unproved.

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Sources & referencesView supporting material

Primary source

Alexander Roitershtein, Reza Rastegar, Robert S. Chapkin and Ivan Ivanov, “Extinction scenarios in evolutionary processes: A Multinomial Wright-Fisher approach”, arXiv:1911.11874 (2019).

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