ON RATIONAL APPROXIMATIONS OF SEMIGROUPS
ON RATIONAL APPROXIMATIONS OF SEMIGROUPS
复制标题
半群的有理逼近
DOI:
10.1137/0716051
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发表时间:
1979
影响因子:
2.9
通讯作者:
V. Thomée
中科院分区:
文献类型:
--
作者:
P. Brenner;V. Thomée
We show that if $r^n (hA),nh = t$, is an A-acceptable rational approximation of a strongly continuous semigroup $e^{tA} $ on a Banach space, then for t bounded, $\| {r^n (hA)} \| \leqq Cn^{{1/2}} $, with certain improvements under additional hypotheses on r. We also discuss the convergence of $r^n (hA)v$ to $e^{tA} v$ as $h \to 0$ under various assumptions on r and v.