The equality case in Cheeger's and Buser's inequalities on RCD spaces
We prove that the sharp Buser’s inequality obtained in the framework of RCD(1, ∞) spaces by the first two authors [29] is rigid, i.e. equality is obtained if and only if the space splits isomorphically a Gaussian. The result is new even in the smooth setting. We also show that the equality in Cheege...
Main Authors: | De Ponti, N, Mondino, A, Semola, D |
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Format: | Journal article |
Language: | English |
Published: |
Elsevier
2021
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