Product integrals of continuous resolvents: Existence and nonexistence |
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Authors: | M A Freedman |
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Institution: | 1. Mathematics Department, Vanderbilt University, 37235, Nashville, TN, USA
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Abstract: | Let {I?λA(t)]?1:0≦λ≦Λ, 0≦t≦T} be a family of resolvents of bounded linear m-dissipative operatorsA(t) on a Banach spaceX. Suppose that the map(λ,t,x←I?λA(t)]?1 x is jointly continuous. Then we show it is not necessarily true that for eachx∈X: (1) the product integral lim n → ∞ Π i=1 n I - (t/n)A(it/n)]?1 x exists, (2) the initial value problemy′(t)=A(t)y(t), y(0)=x has a strong solution. |
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