A spatial surface is a compact surface embedded in the 3-sphere. In this paper, we provide several typical examples of spatial surfaces and construct a coloring invariant to distinguish them. The coloring is defined by using a multiple group rack, which is a rack version of a multiple conjugation quandle.
MSC Codes 57M20 (Primary) 57M25, 57M27 (Secondary)
|Publication status||Published - 2019 Dec 6|
- Multiple group rack
- Oriented spatial surface
- Rack coloring
- Seifert surface
ASJC Scopus subject areas