7 citations · 30 across the 38 of their papers we have counts for
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math.GT2019
Positive flow-spines and contact 3-manifolds
Ippei Ishii, Masaharu Ishikawa, Yuya Koda +1
A flow-spine of a 3-manifold is a spine admitting a flow that is transverse to the spine, where the flow in the complement of the spine is diffeomorphic to a constant flow in an op…
math.GT2019
Twisted book decompositions and the Goeritz groups
Daiki Iguchi, Yuya Koda
We consider the Goeritz groups of the Heegaard splittings induced from twisted book decompositions. We show that there exist Heegaard splittings of distance that have the infin…
math.GT2019★ 3 cited
Shadows of acyclic 4-manifolds with sphere boundary
Yuya Koda, Hironobu Naoe
In terms of Turaev's shadows, we provide a sufficient condition for a compact, smooth, acyclic 4-manifold with boundary the 3-sphere to be diffeomorphic to the standard 4-ball. As…