Advisor(s)
Jerzy Weyman (1955-)
Date of Award
2009
Date Accepted
6-2009
Degree Grantor
Northeastern University
Degree Level
Ph.D.
Degree Name
Doctor of Philosophy
Department or Academic Unit
College of Arts and Sciences. Department of Mathematics.
Keywords
Semi-invariants, Tubular algebras
Subject Categories
Tame algebras
Disciplines
Mathematics
Abstract
The focus of this thesis is on the rings of semi-invariants of the representation spaces of tubular algebras. These rings reflect the cyclic nature of the structure of the modules of the tubular algebras. The main theorem gives the generators and relations of the rings of semi-invariants SI(Q/I, d) where d is a dimension vector of a module in the tubes of an algebra where certain conditions hold. The theorem can be directly applied to Euclidean algebras and Tubular algebras since they have separating tubular families. The results reflect the work of Skowronski and Weyman on semi-invariants of Euclidean Algebras. Also, in the case of tubular algebras, applications of shrinking functors to the rings of semi-invariants are explored.
Document Type
Dissertation
Rights Holder
Kristin D. Webster
Permanent URL
Recommended Citation
Webster, Kristin D., "Semi-invariants of tubular algebras" (2009). Mathematics Dissertations. Paper 3. http://hdl.handle.net/2047/d10019339
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