Designs and graphs
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Bibliographic Information
Designs and graphs
(Topics in discrete mathematics, 4)
North-Holland , Sole distributors for the USA and Canada, Elsevier Science Pub. Co., 1992
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Note
Includes references and index
Description and Table of Contents
Description
In 1988, the news of Egmont Koehler's untimely death at the age of 55
reached his friends and colleagues. It was widely felt that a lasting
memorial tribute should be organized. The result is the present volume,
containing forty-two articles, mostly in combinatorial design theory and
graph theory, and all in memory of Egmont Koehler. Designs and graphs
were his areas of particular interest; he will long be remembered for his
research on cyclic designs, Skolem sequences, t-designs and the
Oberwolfach problem. Professors Lenz and Ringel give a detailed
appreciation of Koehler's research in the first article of this
volume.There is, however, one aspect of Egmont Koehler's biography
that merits special attention. Before taking up the study of mathematics at
the age of 31, he had completed training as a musician (studying both
composition and violoncello at the Musikhochschule in Berlin), and worked
as a cellist in a symphony orchestra for some years. This accounts for his
interest in the combinatorial aspects of music. His work and lectures in
this direction had begun to attract the interest of many musicians, and he
had commenced work on a book on mathematical aspects of musical theory. It
is tragic indeed that his early death prevented the completion of his work;
the surviving paper on the classification and complexity of chords
indicates the loss that his death meant to the area, as he was almost
uniquely qualified to bring mathematics and music together, being a
professional in both fields.
Table of Contents
A Brief Review on Egmont Koehler's Mathematical Work. Edge-pancyclic
Block-intersection Graphs. Symmetric Divisible Designs with k -
1 = 1. Some Constructions of Group Divisible Designs with
Singer Groups. On Indecomposable Pure Mendelsohn Triple Systems. A
Combinatorial Characterization of Geometric Spreads. Hermitian Unitals are
Code Words. Long Cycles in Subgraphs with Prescribed Minimum Degree. Covers
of Graphs and EGQs. The 2-rotational Steiner Triple Systems of Order 25.
Outline Symmetric Latin Squares. Intersections and Supports of Quadruple
Systems. Directed Star Decompositions of Directed Multigraphs. Some Naive
Constructions of S(2,3,v) and S(2,4,v).
On the Maximum Cardinality of Binary Constant Weight Codes with Prescribed
Distance. UEber einen Satz von Koehler. Mutually Balanced Nested
Designs. Difference Families from Rings. Transitive Multipermutation
Graphs. On Infinite Steiner Systems. Tree-partitions of Infinite Graphs.
Plane Four-regular Graphs with Vertex-to-vertex Unit Triangles. Simple
Direct Constructions for Hybrid Triple Designs. Sets in a Finite Plane with
Few Intersection Numbers and a Distinguished Point. The Existence of
Ck-factorizations of K2n -
F. Self-orthogonal Hamilton Path Decompositions. Cyclic 2-(91,6,1)
Designs with Multiplier Automorphisms. The Spectrum of -resolvable
Block Designs With Block Size 3. On Near Generalized Balanced Tournament
Designs. On Parallelism in Steiner Systems. Skolem Labelled Graphs. On the
Simplicity of 2 and 3. A Class of 2-Chromatic SQS(22). The
Solution of the Bipartite Analogue of the Oberwolfach Problem. The Spectrum
of Maximal Sets of One-factors. A Note on Check Character Systems Using
Latin Squares. On the Existence of Cyclic Steiner Quadruple Systems
SQS(2p). Designs Constructed from Maximal Arcs. On the Chromatic
Number of Special Distance Graphs. About Special Classes of Steiner Systems
S(2,4,v). A Few More RBIBDs with k=5 and
=1. Research Problems.
by "Nielsen BookData"