LOVÁSZ, L.  GYÁRFÁS, A.  G. KATONA [et al.]:
Graph theory and combinatorial biology
PREFACE
Conference proceedings have been often labelleed as a form of publication
interior to Journals: the papers are often written with a hot needle to
meet dedlines; even if the proceedings are referred, it is difficult to
guarantee high standards due to a luck of traditions; and since
conference volume articles are often valued less in promotion and tenure
procedures , publications in conference proceedings are often duplicated
in journals.
Therefore it has become more and more fashionablel to produce a volume
of survey article , invited in advance and based on the presentations of
the invited spakers. This leads to a very valuable activity, and perhaps
the only shortcoming of this method is that the activity at the conference,
the emerging judgement about what are the hottest topics and most important
results, is not reflected in the proceedings.
In this volume we tried a third approach. Based on the talks and discussions
of the conference "International Colloquium on Combinatorics and graph
Theory" held at Balatonlelle, July 1996, we identified some topics that
received much attention and were obviously interesting for many participiants.
We then asked participians who worked in this topics to contribute surveys
(in teams or separately) of these areas.
Discrete Mathematics has become a very broad and rich subject; it would
be vain to pretend that a single volume covers a representative selection
of important areas. That we do believe that the articles in this volume
(which we preview) provide valuable information about some of the most
important areas in the field.
CONTENTS
GRAPH THEORY
R. FAUDREE, Forbidden Subgraphs, Closure and Hamiltonian Properties
 Recent Results
H. VAN DER HOLST, L. LOVÁSZ AND A. SCHRIJVER, The Colin
de Verdiére Graph Parameter
A. V. KOSTOCHKA AND M.STIEBITZ, Excess in ColourCritical Graphs
J. KRATOCHVÍL, J. NESETRIL AND M. ROSENFELD, Graph Designs,
Hadamard Matrices and Geometric Configurations
M. MOLLOY AND B. REED, Graph Colouring via the Probabilistic
Method
EXTREMAL SETS
S. L. BEZRUKOV, Edge Isoperimetric Problems on Graphs
K. ENGEL AND U. LECK, Optimal Antichains and Ideals in Macaulay
Posets
J. R. GRIGGS, Database Security and the Distribution of Subset
Sums in R^{m}
COMBINATORIAL OPTIMIZATION
K. MUROTA, Discrete Convex Analysis  Exposition on Conjugacy
and Duality
J. OXLEY, Unavoidable Minors in Graphs and Matroids
COMBINATORICS, MOLECULES, AND BIOLOGY
A. VON HAESELER, Model Based Phylogenetic Inference
P. G. MEZEY, Combinatorial Aspects of Biomolecular Shape Analysis
F. S. ROBERTS, Competition Graphs and Phylogeny Graphs
T. WARNOW, Some Combinatorial Optimization Problems in Phylogenetics
