Decomposition-independence conjecture for vineyard matching

Let S={σ1,,σN}S=\{\sigma_1,\dots,\sigma_N\} be a filtered simplicial complex, and let τSN\tau\in\mathfrak S_N be a permutation of its simplices. Write

S~={στ(1),,στ(N)}.\tilde S=\{\sigma_{\tau(1)},\dots,\sigma_{\tau(N)}\}.

For any sequence J={i1,,ik}J=\{i_1,\dots,i_k\} satisfying

τ=j=1k(ijij+1),\tau=\prod_{j=1}^k(i_j\,i_j+1),

the sequence determines a vineyard matching between the reduced bases of SS and S~\tilde S. Decomposition-independence conjecture. This vineyard matching does not depend on the choice of the sequence JJ. This would make the vineyard matching canonical for an arbitrary simplex permutation, rather than dependent on its decomposition into adjacent transpositions; the source reports independence in experiments but leaves the general statement as a conjecture.

Sources & referencesView supporting material

Primary source

David Loiseaux, Mathieu Carrière and Andrew J. Blumberg, “Multi-parameter Module Approximation: an efficient and interpretable invariant for multi-parameter persistence modules with guarantees”, arXiv:2206.02026 (2025).

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