arXiv subjects

Makoto Masumoto

Publications and source records attributed to Makoto Masumoto.

2 recordsLinked to original sources

arXiv2023

Closed continuations of Riemann surfaces

Any open Riemann surface $R_0$ of finite genus $g$ can be conformally embedded into a closed Riemann surface of the same genus, that is, $R_0$ is realized as a subdomain of a closed Riemann surface of genus $g$. We are concerned with the set $M(R_0)$ of such closed Riemann surfaces. We formulate the problem in the Teichmüller space setting to investigate geometric properties of $M(R_{0})$. We show, among other things, that $M(R_{0})$ is a closed Lipschitz domain homeomorphic to a closed ball provided that $R_0$ is nonanalytically finite.

math.CV↗

arXiv2016

On sets of marked once-holed tori allowing holomorphic mappings into Riemann surfaces with marked handle

In our previous work, for a given Riemann surface $Y_0$ with marked handle, we investigated geometric properties of the set of marked once-holed tori $X$ allowing holomorphic mappings of $X$ into $Y_0$. It turned out that it is a closed domain with Lipschitz boundary. In the present paper we show that the boundary is never smooth. Also, we evaluate the critical extremal length for the existence of holomorphic mappings in terms of hyperbolic lengths.

math.CV↗