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math.CO2026
Sparsity greedoids and pebble game algorithms for posets
Signe Lundqvist, Tovohery Randrianarisoa, Klara Stokes +1
We generalise a sparsity condition for hypergraphs and show a result relating sparseness of hypergraphs to the decomposition of a modified incidence graph into edge-disjoint forest…
math.CO2024
Structural rigidity and flexibility using graphs of groups
Joannes Vermant, Klara Stokes
In structural rigidity, one studies frameworks of bars and joints in Euclidean space. Such a framework is an articulated structure consisting of rigid bars, joined together at join…