Autor:	Kharusi, A. Al, Yashiro, T.
Rok vydání:	2015
Předmět:	Mathematics - Algebraic Topology Mathematics - Geometric Topology
Druh dokumentu:	Working Paper
Popis:	In this paper, we discuss the crossing change operation along exchangeable double curves of a surface-knot diagram. We show that under certain condition, a finite sequence of Roseman moves preserves the property of those exchangeable double curves. As an application for this result, we also define a numerical invariant for a set of surface-knots called $du$-exchangeable set.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1506.02269 Zobrazit plný text záznamu View this record from Arxiv