Left-invertible semigroups on Hilbert spaces

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    3 Citations (Scopus)


    For strongly continuous semigroups on a Hilbert space, we present a short proof of the fact that the left inverse of a left-invertible semigroup can be chosen to be a semigroup as well. Furthermore, we show that this semigroup need not to be unique
    Original languageUndefined
    Pages (from-to)335-342
    Number of pages8
    JournalJournal of evolution equations
    Issue number2
    Publication statusPublished - 2013


    • MSC-47D06
    • MSC-93B07
    • MSC-93C25
    • MSC-47A05
    • IR-86147
    • EWI-23390
    • Exact observability
    • Left inverse
    • METIS-297668
    • Strongly continuous semigroup

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