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Article by |
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Article by |
���ø���ĸ����, ���ǵõ����ֵ�����������ƫ�ַ�����,
��֤���˲�ʳ�ߺͱ���ʳ���Ը���1���.
birth-death prey-predator model is established. By generating
function, we derive the partial differential equations that the mean
process of our model satisfied and prove that the preys and
predators will extinct with probability 1.