arXiv subjects

Takahisa Shiina

Publications and source records attributed to Takahisa Shiina.

2 recordsLinked to original sources

arXiv2013

The space of stability conditions for $A_3$-quiver

The author studied in \cite{shi} the covering map property of the local homeomorphism associating to the space of stability conditions over the $n$-Kronecker quiver. In this paper, we discuss the covering map property for stability conditions over the Dynkin quiver of type $A_3$. The local homeomorphism from a connected component of stability conditions over $A_3$ to 3-dimensional complex vector space becomes a covering map when we restrict it to the complement of six codimension one subspaces.

math.CT↗

arXiv2012

The space of stability conditions for quivers with two vertices

The purpose of this article is to study the space of stability conditions $\stab(P_n)$ on the bounded derived category $\D^b(P_n)$ of finite dimensional representations of a quiver $P_n$ with two vertices and $n$ parallel arrows. There is a local homeomorphism $\z:\stab(P_n)\rightarrow\C^2$. We show that, when the number of arrows is one or two, the map is a covering map if we restrict it to the complement of a line arrangement. When the number of arrows is greater than two we need to remove uncountably many lines to obtain a covering map.

math.KT↗