Open Access
April 2021 Meta-nilpotent quotients of mapping-torus groups and two topological invariants of quadratic forms
Takefumi Nosaka
Author Affiliations +
Osaka J. Math. 58(2): 351-365 (April 2021).
Abstract

We determine the center of a meta-nilpotent quotient of a mapping-torus group. As a corollary, we introduce two invariants, which are quadratic forms, of knots and of mapping classes.

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Copyright © 2021 Osaka University and Osaka City University, Departments of Mathematics
Takefumi Nosaka "Meta-nilpotent quotients of mapping-torus groups and two topological invariants of quadratic forms," Osaka Journal of Mathematics 58(2), 351-365, (April 2021). https://doi.org/
Received: 7 May 2019; Published: April 2021
Vol.58 • No. 2 • April 2021
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