Cited by 281Geometric Analysis and Curvature FlowsNonlinear Partial Differential EquationsAdvanced Differential Geometry Research

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Probability, Convexity, and Harmonic Maps with Small Image I: Uniqueness and Fine Existence

Kendall, Wilfrid S.·1990·Proceedings of the London Mathematical Society

Abstract

This paper uses probability theory to provide an approach to the Dirichlet problem for harmonic maps. The probabilistic tools used are those of manifold-valued Brownian motion and Γ-martingales. Probabilistic proofs are given of uniqueness, continuous dependence on data, and existence of generalized solutions (finely harmonic maps), for target domains which have convex geometry. (This class of domain includes all regular geodesic balls.) Links are made with new results in other fields: the Γ-martingale Dirichlet problem, Riemannian centres of mass (herein termed ‘Karcher means’), and the existence of certain convex functions. Future prospects include the development of the probabilistic approach in order to formulate the notion of a harmonic map defined on a fractal and to attack the corresponding Dirichlet problem.

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Crossref · 10.1112/plms/s3-61.2.371

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Metadata

Authors
Kendall, W. S.
Affiliations
University of Warwick (GB)
Corresponding author
Kendall, Wilfrid S.
Venue
Proceedings of the London Mathematical Society
Publisher
Wiley
Published
1990-09
Volume
s3-61
Issue
2
Pages
371-406
ISSN
0024-6115 (ISSN-L)
OpenAlex
W2040125300
Cited by
281
References
0
Citations by year
2026: 4 · 2025: 5 · 2024: 3 · 2023: 10 · 2022: 7 · 2021: 12 · 2020: 13 · 2019: 13 · 2018: 9 · 2017: 9 · 2016: 13 · 2015: 15 · 2014: 10 · 2013: 17 · 2012: 17
FWCI
7.93
Type
journal article
Language
en
Open access
closed
Locations
  • Proceedings of the London Mathematical Society (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • Physical Sciences › Mathematics › Applied Mathematics › Geometric Analysis and Curvature Flows
  • Physical Sciences › Mathematics › Applied Mathematics › Nonlinear Partial Differential Equations
  • Physical Sciences › Mathematics › Geometry and Topology › Advanced Differential Geometry Research
Keywords
harmonic maps, Dirichlet problem, convex domains, geodesic balls, continuous dependence on data, weak solutions, Karcher mean, convex functions

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