Knots with g(E(K)) = 2 and g(E(K#K#K)) = 6 and Morimoto's Conjecture
Geometric Topology
2007-05-23 v3
Abstract
We show that there exist knots K in S^3 with g(E(K))=2 and g(E(K#K#K))=6. Together with Theorem~1.5 of [1], this proves existence of counterexamples to Morimoto's Conjecture (Conjecture 1.5 of [2]). This is a special case of arxiv.org/abs/math.GT/0701765 [1] Tsuyoshi Kobayashi and Yo'av Rieck. On the growth rate of the tunnel number of knots. J. Reine Angew. Math., 592:63--78, 2006. [2] Kanji Morimoto. On the super additivity of tunnel number of knots.Math. Ann., 317(3):489--508, 2000.
Cite
@article{arxiv.math/0701766,
title = {Knots with g(E(K)) = 2 and g(E(K#K#K)) = 6 and Morimoto's Conjecture},
author = {Tsuyoshi Kobayashi and Yo'av Rieck},
journal= {arXiv preprint arXiv:math/0701766},
year = {2007}
}
Comments
6 pages. Final version