Name Ryo Nikkuni Tokyo Woman's Christian University Session Jan 10 13:50~14:30 E11-102 On invariants of knots and links in a spatial complete four-partite graph $K_{3,3,1,1}$ It is known that every spatial complete four-partite graph $K_{3,3,1,1}$ contains a knot with Arf invariant one. In this talk, we give a formula for invariants of knots and links in a spatial $K_{3,3,1,1}$ in terms of the square of the linking number and the second coefficient of the Conway polynomial and its applications. This is a joint work with Hiroka Hashimoto. 102-1-10/EAS8_Nikkuni.pdf