Universally Koszul algebra;
linear minimal free resolution;
(2K(2);
P-4)-free graph;
D O I:
10.1080/09720529.2012.10698387
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
In this note, it is proved that a graphs is (2K(2), P-4)-free if and only if its edge ring is universally Koszul. Using properties of this family of graphs, we show that Universally Koszul algebras defined by graphs have linear minimal free resolution.