3 papers
math.GT2023
Weinstein trisections of trivial surface bundles
Masaki Ogawa
Weinstein trisection is a trisection of a symplectic 4-manifold whose 1-handlebodies are the Weinstein domain for the symplectic structure induced from an ambient manifold. Lambert…
astro-ph.EP2023
The volcanic and radial expansion/contraction history of the Moon simulated by numerical models of magmatism in the convective mantle
Ken'yo U, Masanori Kameyama, Masaki Ogawa
To understand the evolution of the Moon, we numerically modeled mantle convection and magmatism in a two-dimensional polar rectangular mantle. Magmatism occurs as an upward permeab…
math.GT2023
Some lower bounds for the Kirby-Thompson invariant
Nobutaka Asano, Hironobu Naoe, Masaki Ogawa
Kirby and Thompson introduced a non-negative integer-valued invariant, called the Kirby-Thompson invariant, of a -manifold using trisections. In this paper, we give some lower b…