H. Endo

activity

20002026

most citedBounded cohomology and non-uniform perfection of mapping class groups

57 citations · 110 across the 17 of their papers we have counts for

collaborators

Showing 2015 · math.GTShow all

2 papers · 2 filters

math.GT2015★ 1 cited

Counting Dirac braid relators and hyperelliptic Lefschetz fibrations

Hisaaki Endo, Seiichi Kamada

We define a new invariant $w$ for hyperelliptic Lefschetz fibrations over closed oriented surfaces, which counts the number of Dirac braids included intrinsically in the monodromy,…

math.GT2015

On the Morse-Novikov number for 2-knots

Hisaaki Endo, Andrei Pajitnov

Let $K \subset S^{4}$ be a 2-knot, that is, a smoothly embedded 2-sphere in $S^{4}$ . The Morse-Novikov number $M N (K)$ is the minimal possible number of critical points…