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Green functions of Energized complexes

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arxiv 2010.09152 v1 pith:AUTBDACQ submitted 2020-10-19 math.CO cs.DM

classification math.COcs.DM
keywords energyquadraticentriesexpressiongreenunitvaluescase
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If h is a ring-valued function on a simplicial complex G we can define two matrices L and g, where the matrix entries are the h energy of homoclinic intersections. We know that the sum over all h values on G is equal to the sum of the Green matrix entries g(x,y). We also have already seen that that the determinants of L or g are both the product of the h(x). In the case where h(x) is the parity of dimension, the sum of the energy values was the standard Euler characteristic and the determinant was a unit. If h(x) was the unit in the ring then L,g are integral quadratic forms which are isospectral and inverse matrices of each other. We prove here that the quadratic energy expression summing over all pairs h(x)^* h(y) of intersecting sets is a signed sum of squares of Green function entries. The quadratic energy expression is Wu characteristic in the case when h is dimension parity. For general h, the quadratic energy expression resembles an Ising Heisenberg type interaction. The conjugate of g is the inverse of L if h takes unit values in a normed ring or in the group of unitary operators in an operator algebra.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Remarks on the Brouwer Conjecture

    math.CO 2025-08 conditional novelty 7.0 of 10

    The Brouwer spectral conjecture holds for all connected graphs whose vertex count is at least 4 times the square of the maximum degree; the ordinary-graph case also implies the loop/multigraph case.

  2. Dehn Sommerville Manifolds

    math.CO 2025-08 reject novelty 6.0 of 10

    Dehn-Sommerville manifolds form a broad class of finite simplicial complexes that the paper claims to endow with Dehn-Sommerville face symmetries, level-set closure, chromatic bound 2q+2, and monoid closure under joins.

  3. Euler Characteristics of Random Manifolds

    math.CO 2026-07 conditional novelty 5.0 of 10

    For a random codimension-1 level set H in a simplicial complex G, E[χ(H)] equals 2−2K(G)−χ(G), with K the curvature functional built from the f-vector.

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