Year: 2026
Type: article
Abstract: Blair–Campisi–Taylor–Tomova [Blair, Campisi, Taylor and Tomova, Kirby-Thompson distance for trisections of knotted surfaces, J. Lond. Math. Soc. (2) 105(2) (2022) 765–793.] defined the [Formula: see text]-invariant [Formula: see text] of a knotted surface F, using pants complexes of trisection surfaces of bridge trisections of F. After that, Aranda–Pongtanapaisan–Zhang [Aranda, Pongtanapaisan and Zhang, Bounds for Kirby-Thompson invariants of knotted surfaces, Geom. Dedicata 217(6) (2023) 30] introduced the [Formula: see text]-invariant [Formula: see text] using dual curve complexes instead of pants complexes. In this paper, we determine both the [Formula: see text]-invariant and the [Formula: see text]-invariant of any finite distant sum of standard surfaces, and this is the first example of knotted surfaces whose bridge numbers and these invariants can be arbitrarily large.
Author: Minami Taniguchi
Institution: Tokyo Institute of Technology
Language: English
Subfield: Geometry and Topology
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7128714639