Veering triangulations admit strict angle structures

Craig D Hodgson, J Hyam Rubinstein, Henry Segerman, Stephan Tillmann
2011 Geometry and Topology  
Agol recently introduced the concept of a veering taut triangulation, which is a taut triangulation with some extra combinatorial structure. We define the weaker notion of a "veering triangulation" and use it to show that all veering triangulations admit strict angle structures. We also answer a question of Agol, giving an example of a veering taut triangulation that is not layered.
doi:10.2140/gt.2011.15.2073 fatcat:gxlpwy5ofzg7jejms4q6n2bbyy