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Generators and Relations in Groups and Geometries

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Proceedings of the NATO Advanced Study Institute, Castelvecchio Pascoli, Lucca, Italy, April 1-14, 1990Every group is represented ... Weiterlesen
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Proceedings of the NATO Advanced Study Institute, Castelvecchio Pascoli, Lucca, Italy, April 1-14, 1990

Every group is represented in many ways as an epimorphic image of a free group. It seems therefore futile to search for methods involving generators and relations which can be used to detect the structure of a group. Nevertheless, results in the indicated direction exist. The clue is to ask the right question. Classical geometry is a typical example in which the factorization of a motion into reflections or, more generally, of a collineation into central collineations, supplies valuable information on the geometric and algebraic structure. This mode of investigation has gained momentum since the end of last century. The tradition of geometric-algebraic interplay brought forward two branches of research which are documented in Parts I and II of these Proceedings. Part II deals with the theory of reflection geometry which culminated in Bachmann's work where the geometric information is encoded in properties of the group of motions expressed by relations in the generating involutions. This approach is the backbone of the classification of motion groups for the classical unitary and orthogonal planes. The axioms in this char acterization are natural and plausible. They provoke the study of consequences of subsets of axioms which also yield natural geometries whose exploration is rewarding. Bachmann's central axiom is the three reflection theorem, showing that the number of reflections needed to express a motion is of great importance.

Autorentext
Prof. Dr. Karl Strambach ist seit 1972 ordentlicher Professor an der Universität Erlangen. Nach seiner Habilitation arbeitete er zunächst als Universitätsdozent und Wissenschaftlicher Rat an der Universität Tübingen sowie als Professor an der Universität Kiel. 2007 wurde ihm vonder Universität Debrecen die Ehrendoktorwürde verliehen.

Inhalt
I Optimal factorization of matrices, length problems.- I.1 Classical group.- I.2 Generators of automorphism groups of module.- I.3 Generators of automorphism groups of Cayley algebra.- I.4 Products of matrice.- II Reflection geometry.- II.1 Reflection groups On pre-Hjelmslev groups and related topic.- II.2 Unitary geometry.- II.3 Lie and algebraic Johnsen group.- III Nice generators and relations, applications.- III.1 2-Generation of finite simple groups and some related topic.- III.2 Coxeter groups and three related topic.- III.3 Geometric structure of conjugacy classes in algebraic group.- III.4 Groups with polynomial growth and differential geometry.- III.5 Analyticity and growth of pro p-group.- III.6 Intersections of local algebraic extensions of a Hilbertian fiel.- III.7 Generators and relations for discontinuous group.

Produktinformationen

Titel: Generators and Relations in Groups and Geometries
Editor:
EAN: 9780792311614
ISBN: 0792311612
Format: Fester Einband
Herausgeber: Springer Netherlands
Anzahl Seiten: 468
Gewicht: 863g
Größe: H241mm x B160mm x T30mm
Jahr: 1991
Untertitel: Englisch
Auflage: 1991

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