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arXiv · 2409.00612

7-location, weak systolicity and isoperimetry

Nima Hoda·Ioana-Claudia Lazăr
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Abstract

$m$-location is a local combinatorial condition for flag simplicial complexes introduced by Osajda. Osajda showed that simply connected 8-located locally 5-large complexes are hyperbolic. We treat the nonpositive curvature case of 7-located locally 5-large complexes. We show that any minimal area disc diagram in a 7-located locally 5-large complex is itself 7-located and locally 5-large. We define a natural CAT(0) metric for 7-located disc diagrams and use this to prove that simply connected 7-located locally 5-large complexes have quadratic isoperimetric function. Along the way, we prove that locally weakly systolic complexes are 7-located locally 5-large.

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Nima Hoda, Ioana-Claudia Lazăr. 2024-09-01. 7-location, weak systolicity and isoperimetry. https://arxiv.org/abs/2409.00612

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