Fusion Systems with Standard Components of Small Rank

Download or read book Fusion Systems with Standard Components of Small Rank written by Matthew Welz and published by . This book was released on 2012 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we study two problems in the area of fusion systems which are designed to mimic, simplify, and generalize parts of the Classification of Finite Simple Groups. In general, a finite simple group G is determined to a great extent by the structure and conjugacy pattern of a Sylow 2-subgroup. A 2-fusion system considers only a 2-group S equipped with a family of injective homomorphisms (called fusion maps) on subgroups of S without reference to aI) ambient group G. The general framework of fusion systems also arises naturally in the study of modular representations and classifying spaces; and so results proved for fusion systems have potential ramifications beyond the realm of finite group theory. One problem in this area is to determine S or, whenever possible, the entire 2-fusion system only from the knowledge of certain subgroups and fusion maps between these subgroups. In this thesis we consider two such problems: where S contains subgroups and fusion maps that arise in the Classification with standard components of type SL2(q) and PS L2(q). In particular, we give a characterization of simple, saturated fusion systems containing such components.