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math.CO2011
Depth in Bingo Closure
Jeffrey Beyerl, J. Bowman Light, Robert E. Jamison
Bingo is played on a grid. Take the 25 squares to be the ground set of a closure system in which square is dependent on a set of squares iff completes a lin…
math.CO2011★ 3 cited
Interval Graphs with Containment Restrictions
Jeffrey Beyerl, Robert E. Jamison
An interval graph is proper iff it has a representation in which no interval contains another. Fred Roberts characterized the proper interval graphs as those containing no induced…