Y. Kitagawa

collaborators

2 papers

math.DG2022

Legendre singularities of sub-Riemannian geodesics

Goo Ishikawa, Yumiko Kitagawa

Let $M$ be a surface with a Riemannian metric and $U M$ the unit tangent bundle over $M$ with the canonical contact sub-Riemannian structure $D$ on $U M$ . In this paper, the complete…

math.DG2018

Duality of (2,3,5)-distributions and Lagrangian cone structures

Goo Ishikawa, Yumiko Kitagawa, Asahi Tsuchida +1

As was shown by a part of the authors, for a given $(2, 3, 5)$ -distribution $D$ on a $5$ -dimensional manifold $Y$ , there is, locally, a Lagrangian cone structure $C$ on another $5$ …