Bull. Korean Math. Soc. 2004; 41(2): 337-345
Printed June 1, 2004
Copyright © The Korean Mathematical Society.
Won Choi
University of Incheon
In allelic model $X=(x_1 ,x_2 ,\cdots ,x_d )$, \[ M_f(t)=f(p(t))-\int_0^t Lf(p(t))ds \] is a $P$-martingale for diffusion operator $L$ under the certain conditions. In this note, we can show existence and uniqueness of solution for stochastic differential equation and martingale problem associated with mean vector. Also, we examine that if the operator related to this martingale problem is connected with Markov processes under certain circumstance, then this operator must satisfy the maximum principle.
Keywords: countable allelic model, martingale problem, stochastic differential equation, mean vector, second order differential operator
MSC numbers: 92D25, 60H30, 47A05
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