Weighted Homology and Cohomology of Weighted Polyhedra

arXiv:2608.29013 2026 Architecture 1 ideas extracted · analyzed Sep 1, 2026

What the math gives to ML

The paper introduces divisibility-constrained integer weights on simplices and uses them to modify boundary and coboundary operators while preserving the chain-complex identity \(\partial^w\partial^w=0\). This yields incidence operators whose coefficients encode hierarchical multiplicities rather than merely adjacency, together with integral torsion groups that distinguish weighted complexes having the same ordinary topology. A transferable construction is a weighted simplicial message-passing or Hodge layer whose up/down operators use these ratio-valued incidences, with a chain-consistency diagnostic enforcing exact algebraic cancellation. The most realistic first target is graph- or mesh-based learning, where simplex weights represent confidence, multiplicity, scale, or physical material classes.

Ideas from this paper

Unverified 2026

Divisibility-Weighted Simplicial Message Passing

Replace ordinary simplicial incidence matrices in a graph or mesh neural network by integer-ratio weighted incidences derived from a divisibility hierarchy on simplex weights. The resulting up/down message-passing operators preserve exact chain cancellation, so features propagated around a filled simplex cannot create spurious boundary signals. Train the weights either from known metadata or as positive integer powers of a small prime, while retaining an ordinary-incidence baseline for ablation.

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Paper: Weighted Homology and Cohomology of Weighted Polyhedra arXiv:2608.29013