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math.CO2021★ 2 cited
Improved Upper Bound on the Linear Turán Number of the Crown
Willem Fletcher
A linear -graph is a set of vertices along with a set of edges, which are three element subsets of the vertices, such that any two edges intersect in at most one vertex. The cro…
math.CO2021★ 2 cited
Crowns in linear -graphs
Alvaro Carbonero, Willem Fletcher, Jing Guo +3
A \textit{linear -graph}, , is a set, , of vertices together with a set, , of -element subsets of , called edges, so that any two distinct edges intersec…
math.CO2021
Graphs with Many Hamiltonian Paths
Erik Carlson, Willem Fletcher, MurphyKate Montee +3
A graph is \emph{hamiltonian-connected} if every pair of vertices can be connected by a hamiltonian path, and it is \emph{hamiltonian} if it contains a hamiltonian cycle. We constr…