A characterization theorem for the evolu
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Giovanni Frosali; Cornelis V. M. van der Mee; Francesco Mugelli
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Article
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2004
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John Wiley and Sons
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English
โ 148 KB
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## Abstract We consider a class of abstract evolution problems characterized by the sum of two unbounded linear operators __A__ and __B__, where __A__ is assumed to generate a positive semigroup of contractions on an L^1^โspace and B is positive. We study the relations between the semigroup generat