We try to give a cluster-algebraic interpretation of the complex volume of knots. We construct the R–operator from cluster mutations, and show that it can be regarded as a hyperbolic octahedron. The cluster variables are interpreted as the edge parameters used by Zickert for computing complex volume.
Keywords: knot, hyperbolic volume, complex volume, cluster algebra
Hikami, Kazuhiro  1 ; Inoue, Rei  2
@article{10_2140_agt_2015_15_2175,
author = {Hikami, Kazuhiro and Inoue, Rei},
title = {Braids, complex volume and cluster algebras},
journal = {Algebraic and Geometric Topology},
pages = {2175--2194},
year = {2015},
volume = {15},
number = {4},
doi = {10.2140/agt.2015.15.2175},
url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2015.15.2175/}
}
TY - JOUR AU - Hikami, Kazuhiro AU - Inoue, Rei TI - Braids, complex volume and cluster algebras JO - Algebraic and Geometric Topology PY - 2015 SP - 2175 EP - 2194 VL - 15 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.2140/agt.2015.15.2175/ DO - 10.2140/agt.2015.15.2175 ID - 10_2140_agt_2015_15_2175 ER -
Hikami, Kazuhiro; Inoue, Rei. Braids, complex volume and cluster algebras. Algebraic and Geometric Topology, Tome 15 (2015) no. 4, pp. 2175-2194. doi: 10.2140/agt.2015.15.2175
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