Homotopy groups of moduli spaces of stable quiver representations

Details Homotopy groups of moduli spaces of stable quiver representations Homotopy groups of moduli spaces of stable quiver representations

2009-01-27

arxiv.org/abs/0901.4156v2

Mathematics

Symplectic Geometry

18 pages. Final version, to appear Int. J. Math

Scientific paper

The purpose of this paper is to describe a method for computing homotopy groups of the space of $\alpha$-stable representations of a quiver with fixed dimension vector and stability parameter $\alpha$. The main result is that the homotopy groups of this space are trivial up to a certain dimension, which depends on the quiver, the choice of dimension vector, and the choice of parameter. As a corollary we also compute low-dimensional homotopy groups of the moduli space of $\alpha$-stable representations of the quiver with fixed dimension vector, and apply the theory to the space of non-degenerate polygons in three-dimensional Euclidean space.

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