研究由对偶分支矩阵导出的2个算子Ql∞与Qc0,其中Ql∞在l∞上生成一次压缩积分半群G(t),并得到G(t)具有随机单调和渐近远离性;同时给出Qc0在c0上生成正的连续半群的充要条件.
It is shown that the dual Markov branching q-matrix Q deduces two operators Ql∞ and Qc0 on l∞ and c0 respectively.Ql∞ generates a positive contraction integrated semigroup G(t) on l∞,which is monotone and asymptotically remote.And the sufficient and necessary conditions for Qc0 generates a continuous contraction semigroup on c0 are given.