activity
20002026
most cited3-Manifolds with Yamabe invariant greater than that of $\RP^3$

26 citations · 55 across the 21 of their papers we have counts for

collaborators

22 papers

math.DG2026

The optimal diameter estimate for positive Yamabe metrics

Kazuo Akutagawa, Mijia Lai, Chao Li +2

In this paper, we prove the optimal diameter estimate for positive Yamabe metrics on a connected, closed manifold. It is a scalar curvature version of both classical Myers' diamete…

math.DG2025

Harmonic maps from the product of the hyperbolic planes to the hyperbolic space

Kazuo Akutagawa, Yoshihiko Matsumoto

An existence result is shown for the asymptotic Dirichlet problem for harmonic maps from the product of the hyperbolic planes to the hyperbolic space, where the Dirichlet data is g…

math.DG2019

Non-existence of Yamabe minimizers on singular spheres

Kazuo Akutagawa, Ilaria Mondello

We prove that a minimizer of the Yamabe functional does not exist for a sphere of dimension , endowed with a standard edge-cone spherical metric of cone an…

math.DG2018

A gap theorem for positive Einstein metrics on the four-sphere

Kazuo Akutagawa, Hisaaki Endo, Harish Seshadri

We show that there exists a universal positive constant with the following property: Let be a positive Einstein metric on . If the Yamabe constant of t…

math.DG2016★ 1 cited

Remarks on the Gauss images of complete minimal surfaces in Euclidean four-space

Reiko Aiyama, Kazuo Akutagawa, Satoru Imagawa +1

We perform a systematic study of the image of the Gauss map for complete minimal surfaces in Euclidean four-space. In particular, we give a geometric interpretation of the maximal…

math.DG2014

Proper harmonic maps between asymptotically hyperbolic manifolds

Kazuo Akutagawa, Yoshihiko Matsumoto

Generalizing the result of Li and Tam for the hyperbolic spaces, we prove an existence theorem on the Dirichlet problem for harmonic maps with boundary conditions at infinity…