Title of article
Bridge index for theta curves in the 3-sphere
Author/Authors
Goda، نويسنده , , Hiroshi، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 1997
Pages
20
From page
177
To page
196
Abstract
We define an invariant ‘bridge index’ for theta curves which are spatial graphs in the 3-sphere. This invariant is a generalization of bridge index for links defined by Schubert. Then we investigate the relationships to other invariants and prove that 2-bridge theta curves are prime.
Keywords
Theta curve , Bridge presentation , Yamada polynomial , Invariant , Bridge index , Thin position
Journal title
Topology and its Applications
Serial Year
1997
Journal title
Topology and its Applications
Record number
1579125
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