2019/09/16 by Matsuda, Hiroshi
#FOS: Mathematics #Geometric Topology (math.GT)
paper · doi:10.48550/arxiv.1909.07020
Ng constructed an invariant of knots in ℝ3, a combinatorial knot contact homology. Extending his study, we construct an invariant of surface-knots in ℝ4 using marked graph diagrams.