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On collisionless transport semigroups with boundary operators of norm one

On collisionless transport semigroups with boundary operators of norm one We deal with streaming operators T H defined in L 1 spaces by the directional derivative $$-v \frac{\partial}{\partial x}$$ with positive boundary operator H of norm 1 relating the incoming and outgoing fluxes. It is known that T H need not be a generator but there exists a contraction semigroup generated by an extension A of T H . This paper deals with the total mass carried by individual trajectories { e tA f ; t ≥ 0} for nonnegative initial data f and related topics. In particular, our analysis covers the problem of (the lack of) stochasticity of { e tA ; t ≥ 0} for conservative boundary operator H . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Evolution Equations Springer Journals

On collisionless transport semigroups with boundary operators of norm one

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References (12)

Publisher
Springer Journals
Copyright
Copyright © 2008 by Birkhaueser
Subject
Mathematics; Analysis
ISSN
1424-3199
eISSN
1424-3202
DOI
10.1007/s00028-007-0360-5
Publisher site
See Article on Publisher Site

Abstract

We deal with streaming operators T H defined in L 1 spaces by the directional derivative $$-v \frac{\partial}{\partial x}$$ with positive boundary operator H of norm 1 relating the incoming and outgoing fluxes. It is known that T H need not be a generator but there exists a contraction semigroup generated by an extension A of T H . This paper deals with the total mass carried by individual trajectories { e tA f ; t ≥ 0} for nonnegative initial data f and related topics. In particular, our analysis covers the problem of (the lack of) stochasticity of { e tA ; t ≥ 0} for conservative boundary operator H .

Journal

Journal of Evolution EquationsSpringer Journals

Published: May 1, 2008

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