Angles between curves in metric measure spaces

The goal of the paper is to study the angle between two curves in the framework of metric (and metric measure) spaces. More precisely, we give a new notion of angle between two curves in a metric space. Such a notion has a natural interplay with optimal transportation and is particularly well suited...

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Main Authors: Han, B, Mondino, A
Format: Journal article
Published: De Gruyter Open 2017
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author Han, B
Mondino, A
author_facet Han, B
Mondino, A
author_sort Han, B
collection OXFORD
description The goal of the paper is to study the angle between two curves in the framework of metric (and metric measure) spaces. More precisely, we give a new notion of angle between two curves in a metric space. Such a notion has a natural interplay with optimal transportation and is particularly well suited for metric measure spaces satisfying the curvature-dimension condition. Indeed one of the main results is the validity of the cosine formula on RCD*(K, N) metric measure spaces. As a consequence, the new introduced notions are compatible with the corresponding classical ones for Riemannian manifolds, Ricci limit spaces and Alexandrov spaces.
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institution University of Oxford
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spelling oxford-uuid:79e6b0e3-cbba-4228-9b8c-880b9177d1332022-03-26T20:40:18ZAngles between curves in metric measure spacesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:79e6b0e3-cbba-4228-9b8c-880b9177d133Symplectic Elements at OxfordDe Gruyter Open2017Han, BMondino, AThe goal of the paper is to study the angle between two curves in the framework of metric (and metric measure) spaces. More precisely, we give a new notion of angle between two curves in a metric space. Such a notion has a natural interplay with optimal transportation and is particularly well suited for metric measure spaces satisfying the curvature-dimension condition. Indeed one of the main results is the validity of the cosine formula on RCD*(K, N) metric measure spaces. As a consequence, the new introduced notions are compatible with the corresponding classical ones for Riemannian manifolds, Ricci limit spaces and Alexandrov spaces.
spellingShingle Han, B
Mondino, A
Angles between curves in metric measure spaces
title Angles between curves in metric measure spaces
title_full Angles between curves in metric measure spaces
title_fullStr Angles between curves in metric measure spaces
title_full_unstemmed Angles between curves in metric measure spaces
title_short Angles between curves in metric measure spaces
title_sort angles between curves in metric measure spaces
work_keys_str_mv AT hanb anglesbetweencurvesinmetricmeasurespaces
AT mondinoa anglesbetweencurvesinmetricmeasurespaces