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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Arcs defined by one-parameter semigroups of operators
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by Hugo D. Junghenn and C. T. Taam PDF
Proc. Amer. Math. Soc. 44 (1974), 113-120 Request permission

Abstract:

Let $T(t)(t \geqq 0)$ be a one-parameter semigroup of continuous linear operators in a locally convex reflexive linear topological space $X$ such that $T(c)$ is an isomorphism (into) for some $c > 0$. It is proved that for any $x \in X,T( \cdot )x$ is of bounded variation on finite intervals if and only if $x$ is in the domain of the infinitesimal generator of $T(t)$. The result is interpreted geometrically in terms of arc-length.
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Additional Information
  • © Copyright 1974 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 44 (1974), 113-120
  • MSC: Primary 47D05
  • DOI: https://doi.org/10.1090/S0002-9939-1974-0331114-7
  • MathSciNet review: 0331114