Theory of Association Schemes

Buch | Hardcover
XVI, 284 Seiten
2005 | 2005
Springer Berlin (Verlag)
978-3-540-26136-0 (ISBN)

Lese- und Medienproben

Theory of Association Schemes - Paul-Hermann Zieschang
128,39 inkl. MwSt
The present text is an introduction to the theory of association schemes. We start with the de?nition of an association scheme (or a scheme as we shall say brie?y), and in order to do so we ?x a set and call it X. We write 1 to denote the set of all pairs (x,x) with x? X. For each subset X ? r of the cartesian product X×X, we de?ne r to be the set of all pairs (y,z) with (z,y)? r.For x an element of X and r a subset of X× X, we shall denote by xr the set of all elements y in X with (x,y)? r. Let us ?x a partition S of X×X with?? / S and 1 ? S, and let us assume X ? that s ? S for each element s in S. The set S is called a scheme on X if, for any three elements p, q,and r in S, there exists a cardinal number a such pqr ? that|yp?zq| = a for any two elements y in X and z in yr. pqr The notion of a scheme generalizes naturally the notion of a group, and we shall base all our considerations on this observation. Let us, therefore, brie?y look at the relationship between groups and schemes.

Paul-Hermann Zieschang received a Doctor of Natural Sciences and the Habilitation in Mathematics from the Christian-Albrechts-Universität zu Kiel. He is also Extraordinary Professor of the Christian-Albrechts-Universität zu Kiel. Presently, he holds the position of an Associate Professor at the University of Texas at Brownsville. He held visiting positions at Kansas State University and at Kyushu University in Fukuoka.

Basic Facts.- Closed Subsets.- Generating Subsets.- Quotient Schemes.- Morphisms.- Faithful Maps.- Products.- From Thin Schemes to Modules.- Scheme Rings.- Dihedral Closed Subsets.- Coxeter Sets.- Spherical Coxeter Sets.

From the reviews:

"Theory of association schemes is a self-contained textbook. ... The theory of association schemes can be applied to Hecke algebras of transitive permutation groups, and the algebras are usually noncommutative. So this treatment is also good for group theorists. ... The book under review also contains many recent developments in the theory." (Akihide Hanaki, Mathematical Reviews, 2006 h)

Erscheint lt. Verlag 20.10.2005
Reihe/Serie Springer Monographs in Mathematics
Zusatzinfo XVI, 284 p.
Verlagsort Berlin
Sprache englisch
Maße 155 x 235 mm
Gewicht 550 g
Themenwelt Mathematik / Informatik Mathematik Geometrie / Topologie
Mathematik / Informatik Mathematik Graphentheorie
Schlagworte Algebra • arithmetic • association scheme • Building • combinatorics • Group • Gruppe (Mathematik) • Morphism • MSC (2000): 05E30, 20N99 • Proof • Theorem
ISBN-10 3-540-26136-2 / 3540261362
ISBN-13 978-3-540-26136-0 / 9783540261360
Zustand Neuware
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