M Ozawa - Commentarii Mathematici Helvetici, 2002 - Springer
We show that any closed incompressible surface in the complement of a positive knot is algebraically non-split from the knot, positive knots cannot bound non-free incompressible …
M Ozawa - arXiv preprint arXiv:0905.4340, 2009 - arxiv.org
We introduce two numerical invariants, the waist and the trunk of knots. The waist of a closed incompressible surface in the complement of a knot is defined as the minimal intersection …
A Ishii, K Kishimoto, M Ozawa - … of the Mathematical Society of Japan, 2015 - jstage.jst.go.jp
We show that a handlebody-knot whose exterior is boundaryirreducible has a unique maximal unnested set of knotted handle decomposing spheres up to isotopies and annulus …
K Ichihara, M Ozawa - Journal of Knot Theory and Its Ramifications, 2000 - World Scientific
It is well known that for many knot classes in the 3-sphere, every closed incompressible surface in their complements contains an essential loop which is isotopic into the boundary …
Neuwirth asked if any non-trivial knot in the 3-sphere can be embedded in a closed surface so that the complement of the surface is a connected essential surface for the knot …
K Ichihara, M Ozawa - Journal of the Australian Mathematical …, 2000 - cambridge.org
It is conjectured that a hyperbolic knot complement does not contain a closed embedded totally geodesic surface. In this paper, we show that there are no such surfaces in the …
Additivity of free genus of knots - ScienceDirect Skip to main contentSkip to article Elsevier logo Journals & Books Search RegisterSign in View PDF Download full issue Search ScienceDirect …
L Benard - Osaka Journal of Mathematics, 2021 - projecteuclid.org
In this paper we define the Reidemeister torsion as a rational function on the geometric components of the character variety of a one-cusped hyperbolic manifold $ M $. We study its …