6 papers · 1 filter
Differential operators, anisotropy, and simplicial spheres
Kalle Karu, Matt Larson, Alan Stapledon
We find identities involving differential operators in the generic artinian reduction of the Stanley-Reisner ring of a simplicial sphere in any positive characteristic. These ident…
Rigidity matroids and linear algebraic matroids with applications to matrix completion and tensor codes
Joshua Brakensiek, Manik Dhar, Jiyang Gao +2
We establish a connection between problems studied in rigidity theory and matroids arising from linear algebraic constructions like tensor products and symmetric products. A specia…
Absolute incidence theorems and tilings
Lukas Kühne, Matt Larson
We give a precise definition of incidence theorems in plane projective geometry and introduce the notion of ``absolute incidence theorems,'' which hold over any ring. Fomin and Pyl…
Lefschetz properties of local face modules
Matt Larson, Alan Stapledon
Local face modules are modules over face rings whose Hilbert function is the local -vector of a triangulation of a simplex. We study when Lefschetz properties hold for local fac…
Complementary vectors of simplicial complexes
Matt Larson, Alan Stapledon
We classify the complementary vectors of doubly Cohen-Macaulay complexes. This proves a conjecture of Swartz, negatively answers a question of Athanasiadis and Tzanaki, and gives n…
Straightening laws for Chow rings of matroids
Matt Larson
We give elementary and non-inductive proofs of three fundamental theorems about Chow rings of matroids: the standard monomial basis, Poincare duality, and the dragon-Hall-Rado form…