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Integration by parts formulas and rotationally invariant Sobolev calculus on free loop spaces

✍ Scribed by R. Leandre


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
606 KB
Volume
11
Category
Article
ISSN
0393-0440

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✦ Synopsis


We give formulas for integration by parts over the path space and over the loop space of a manifold. We define Sobolev spaces and an Ornstein-Uhlenbeck operator on the loop space. We find some functionals which belongto all the Sobolev spaces.


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Integration by Parts and Quasi-Invarianc
✍ Bruce K Driver 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 744 KB

Integration by parts formulas are established both for Wiener measure on the path space of a loop group and for the heat kernel measures on the loop group. The Wiener measure is defined to be the law of a certain loop group valued ``Brownian motion'' and the heat kernel measures are time t, t>0, dis

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✍ Bruce K. Driver 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 151 KB

It is asserted in Definition 4.2 in [1] that the random operators U(t) defined there are unitary. As was pointed out to the author by Shizan Fang, it is clear that U(t) is an isometry but it is not obvious that U(t) is surjective. The purpose of this note is to fill this gap. 1998 Academic Press 1.