CP13
Graph Theory: Chordal and Intersection Graphs II

1:30 Verification of Weakly Triangulated Graphs

Jeremy P. Spinrad, Vanderbilt University; R. Sritharan, Indiana State University

1:50 Unit and Proper Bitolerance Digraphs

Randy Shull and Ann Trenk, Wellesley College

2:10 Hypergraph Sandwich Problems

Martin Charles Golumbic, Bar-Ilan University, Israel

2:30 Bounded Degree Interval Sandwich Problems

Haim Kaplan, Princeton University; and Ron Shamir, Tel Aviv University, Israel

2:50 The Homogeneous Set Sandwich Problem

Marcia R. Cerioli, Universidade Federal do Rio de Janeiro, Brasil; Hazel Everett, Universit‚ du Qu‚bec … Montr‚al, Canada; Celina M. H. de Figueiredo and Sulamita Klein, Universidade Federal do Rio de Janeiro, Brasil

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