【摘要】 本文讨论下列算子半群第一指数公式的同时逼近性质,得到如下结果这里0〈h〈1,K为与h无关的常数,(I为怛等算子),更多还原

【Abstract】 This paper study the simultaneous approximation properties of the first exponential formulaWe obtain the following resut,where 0<h<l, K is a constant and independent of h, fD(A) (r = 0, 1,2,... ), Ak = [T(h)-I]/h(I is the identity operator) and w,(f,t) = sup|[(T()-I)|x更多还原