Hochstättler, WinfriedKeip, SophiaKnauer, Kolja2026-02-202026-02-202025-03-170209-9683https://hdl.handle.net/2445/227135We generalize the (signed) Varchenko matrix of a hyperplane arrangement to complexes of oriented matroids and show that its determinant has a nice factorization. This extends previous results on hyperplane arrangements and oriented matroids.23 p.application/pdfengcc by (c) Winfried Hochstättler et al., 2025http://creativecommons.org/licenses/by/4.0/Àlgebra linealMatroidesCombinatòria (Matemàtica)Geometria discretaLinear algebraMatroidsCombinationsDiscrete geometryinfo:eu-repo/semantics/article7659672026-02-20info:eu-repo/semantics/openAccess