## Theses and Dissertations

#### Title

Quiver representations and their dense orbits

#### DOI

10.17077/etd.0zw7-ysvk

Dissertation

Spring 2019

#### Degree Name

PhD (Doctor of Philosophy)

Mathematics

Kinser, Ryan

Camillo, Victor

Cooper, Benjamin

Iovanov, Miodrag

Frohman, Charles

#### Abstract

We can view quiver representations of a fixed dimension vector as an algebraic variety over an algebraically closed field \$K\$. There is an action of the product of general linear groups on each of these varieties where the orbits of the action correspond to isomorphism classes of quiver representation. A \$K\$-algebra \$A\$ is said to have the dense orbit property if for each dimension vector, the product of the general linear group acts on each irreducible component of the module variety with a dense orbit. Under certain conditions, a \$K\$ algebra \$A\$ is representation finite if and only if it \$A\$ has the dense orbit property. The implication representation finite implies the dense orbit property is always true. The converse is not true in general, as shown by Chindris, Kinser, and Weyman in \cite{ryan}. Our main theorem of this thesis builds on their work to give a family of representation infinite algebras with the dense orbit property. We also give a conjectured classification of indecomposables with dense orbits. \par

In the future, we hope the work presented here can be used to find even more examples of representation infinite algebra with the dense orbit property to then develop deeper theory to classify algebras with the dense orbit property that are representation infinite.

#### Keywords

dense orbits, module variety, quiver representations

vi, 87 pages

#### Bibliography

Includes bibliographical references (pages 86-87).