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A characterization theorem for certain unions of two starshaped sets inR2

✍ Scribed by Marilyn Breen; Tudor Zamfirescu


Publisher
Springer
Year
1987
Tongue
English
Weight
369 KB
Volume
22
Category
Article
ISSN
0046-5755

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A characterization theorem for the evolu
✍ Giovanni Frosali; Cornelis V. M. van der Mee; Francesco Mugelli πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 148 KB πŸ‘ 1 views

## 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^‐space and B is positive. We study the relations between the semigroup generat