203 citations · 391 across the 22 of their papers we have counts for
Showing math.COShow all
3 papers · 1 filter
math.CO2020★ 1 cited
Tighter Bounds on Directed Ramsey Number R(7)
David Neiman, John Mackey, Marijn Heule
Tournaments are orientations of the complete graph, and the directed Ramsey number is the minimum number of vertices a tournament must have to be guaranteed to contain a tra…
math.CO2019
The Resolution of Keller's Conjecture
Joshua Brakensiek, Marijn Heule, John Mackey +1
We consider three graphs, , , and , related to Keller's conjecture in dimension 7. The conjecture is false for this dimension if and only if at least one…
math.CO2018★ 13 cited
Computing Small Unit-Distance Graphs with Chromatic Number 5
Marijn J. H. Heule
We present a new method for reducing the size of graphs with a given property. Our method, which is based on clausal proof minimization, allowed us to compute several 553-vertex un…