The comparison obtuse constant conjecture for Alexandrov spaces

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Let MM be a compact Alexandrov space with curvature bounded below, and let ob~(M)\widetilde{\rm ob}(M) be its comparison obtuse constant. Let D(M)D(M) be the double of MM. For a noncompact Alexandrov space MM, let ob~∞(M)\widetilde{\rm ob}_{\infty}(M) be its comparison obtuse constant from infinity, and let ob∞(M){\rm ob}_{\infty}(M) be the corresponding obtuse constant from infinity.

Comparison obtuse constant conjecture. The conclusions of the relevant compact results would remain valid with ob~(M)\widetilde{\rm ob}(M) in place of ob(M){\rm ob}(M) when MM is compact. Likewise, the relevant noncompact theorem would remain valid with ob~∞(M)\widetilde{\rm ob}_{\infty}(M) in place of ob∞(M){\rm ob}_{\infty}(M) when MM is noncompact.

The conjecture proposes that the comparison versions of the obtuse constants suffice for the paper's compact and noncompact conclusions. The supplied text gives no resolution; the referenced theorem and corollary are not included in the candidate span, so their exact conclusions cannot be reproduced here.

References

Primary source

Ayato Mitsuishi and Takao Yamaguchi, “Obtuse constants of Alexandrov spaces”, arXiv:1710.00497 (2018).

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