Extremal subsets in geodesically complete spaces with curvature bounded above
We introduce the notion of an extremal subset in a geodesically complete space with curvature bounded above, i.e., a GCBA space. This is an analog of an extremal subset in an Alexandrov space with curvature bounded below introduced by Perelman and Petrunin. We prove that under an additional assumpti...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-12-01
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| Series: | Analysis and Geometry in Metric Spaces |
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| Online Access: | https://doi.org/10.1515/agms-2023-0104 |