Presentations of Semigroup Algebras of Weighted Trees

We study presentations for subalgebras of invariants of the coordinate algebras of binary symmetric models of phylogenetic trees studied by Buczynska and Wisniewski. These algebras arise as toric degenerations of projective coordinate rings of weight varieties of the Grassmannian of two planes associated to the Pl\"ucker embedding, and as toric degenerations of rings of invariants of Cox-Nagata rings.

Department dc:contributor.department

Mathematics

Year dc:date.issued

2009

Author dc:creator

• Manon, Christopher Allen

Advisor dc:contributor.advisor

• Millson, John J

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/1903/9121

OAI identifier oai:identifier

oai:drum.lib.umd.edu:1903/9121