The Hyperbolic Formal Affine Demazure Algebra

In this thesis, we extend the construction of the formal (affine) Demazure algebra due to Hoffnung, Malagón-López, Savage and Zainoulline in two directions. First, we introduce and study the notion of formal Demazure lattices of a Kac-Moody root system and show that the definitions and properties of...

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Bibliographic Details
Main Author: Leclerc, Marc-Antoine
Other Authors: Neher, Erhard
Language:en
Published: Université d'Ottawa / University of Ottawa 2016
Subjects:
Online Access:http://hdl.handle.net/10393/35218
http://dx.doi.org/10.20381/ruor-176
Description
Summary:In this thesis, we extend the construction of the formal (affine) Demazure algebra due to Hoffnung, Malagón-López, Savage and Zainoulline in two directions. First, we introduce and study the notion of formal Demazure lattices of a Kac-Moody root system and show that the definitions and properties of the formal (affine) Demazure operators and algebras hold for such lattices. Second, we show that for the hyperbolic formal group law the formal Demazure algebra is isomorphic (after extending the coefficients) to the Hecke algebra.