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Circular-arc graphs are natural analogs of chordal and interval graphs, but without some of the features that make chordal and interval graphs particularly nice; perhaps, the biggest difference is the failure of the Helly condition. Restricting circular-arc representations so as to have no three or fewer arcs cover the entire circle and to have the endpoints of arcs be distinguishable by other arcs...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.