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math.CO2026
From one generator to loop order on the three-cube
Jonathan Washburn, Milan Zlatanović
We study the monoid of based closed walks on the -skeleton of the three-dimensional cube . The fundamental group of this graph is the free group . We prov…
math.CO2026
The Cactus Criterion: When Nonlinear Hodge Theory Reduces to Linear on Graphs
Sebastian Pardo-Guerra, Anil Thapa, Jonathan Washburn
Let be a finite connected simple graph with a chosen orientation of its edges. For the edge potential we minimize over each affine c…
math.CO2026
Matching Rules as Cocycle Conditions: Discrete Potentials on Penrose and Canonical Projection Tilings
Sebastian Pardo-Guerra, Jonathan Washburn, Elshad Allahyarov
Aperiodic tilings support two classically studied but hitherto separately presented structures: matching rules, which enforce global order via local constraints, and height functio…