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arXiv · 2508.07761

On Hodge Laplacians on General Simplicial Complexes

Philipp Bartmann·Matthias Keller
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Abstract

We study Laplacians on general countable weighted simplicial complexes from a conceptual point of view. These operators will first be introduced formally before showing that those formal operators coincide with self-adjoint realizations of operators arising from quadratic forms. A major conceptual perspective is the correspondence to signed Schr\"odinger operators unveiling the Forman curvature. The main results are criteria for essential self-adjointness via lower bounded Forman curvature and a Gaffney type result via completeness. Finally, we study spectral relations between these Laplacians.

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Philipp Bartmann, Matthias Keller. 2025-08-11. On Hodge Laplacians on General Simplicial Complexes. https://arxiv.org/abs/2508.07761

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