Simplifying branched covering surface-knots by an addition of 1-handles with chart loops

Autor: Nakamura, Inasa
Rok vydání: 2017
Předmět:
Zdroj: J. Knot Theory Ramifications Vol. 27, No. 5 (2018) 1850031
Druh dokumentu: Working Paper
DOI: 10.1142/S0218216518500311
Popis: A branched covering surface-knot over an oriented surface-knot $F$ is a surface-knot in the form of a branched covering over $F$. A branched covering surface-knot over $F$ is presented by a graph called a chart on a surface diagram of $F$. For a branched covering surface-knot, an addition of 1-handles equipped with chart loops is a simplifying operation which deforms the chart to the form of the union of free edges and 1-handles with chart loops. We investigate properties of such simplifications.
Comment: 26 pages, 15 figures, title changed, minor modifications, to appear in J. Knot Theory Ramifications
Databáze: arXiv