European Journal of Combinatorics, Volume 15

Volume 15, Number 1, January 1994

Special Issue: Groups and Geometries

Preface. 1
Frank De Clerck, Hendrik Van Maldeghem:
On Linear Representations of ([alpha], [beta])-Geometries. 3-11
Michel Deza, Hiroshi Maehara:
Projecting a Simplex onto Another One. 13-16
Antonio Pasini:
Shadow Geometries and Simple Connectedness. 17-34
Giustina Pica, Antonio Pasini:
Flag-transitivity in Shadow Geometries. 35-44
J. J. Seidel:
Distance Matrices and Lorentz Space. 45-46
Ernest E. Shult:
A Remark on Grassmann Spaces and Half-spin Geometries. 47-52
Johannes Siemons:
Decompositions of Modules Associated to Finite Partially Ordered Sets. 53-56
Stephen D. Smith:
The Dual-parapolar Space for the Monster Embeds in the Griess Module Mod 2. 57-65
Irene D. Suprunenko:
Representations of Algebraic Groups Containing Matrices with Large Jordan Blocks. 67-71
Satoshi Yoshiara:
On Some Extended Dual Polar Spaces, I. 73-86
François Zara:
Constructing New Fischer Groups from Old Ones. 87-104
Alexandre A. Ivanov, Cheryl E. Praeger:
Problem Session at ALCOM-91. 105-112

Béla Bollobás, Yoshiharu Kohayakawa:
Percolation in High Dimensions. 113-125
Bruno Courcelle, Yves Métivier:
Coverings and Minors: Application to Local Computations in Graphs. 127-138
Michael Drmota:
A Bivariate Asymptotic Expansion of Coefficients of Powers of Generating Functions. 139-152
E. E. Guerin:
A Note on Layer Replacements and Solid Partitions. 153-158
Milagros Izquierdo, David Singerman:
Hypermaps on Surfaces with Boundary. 159-172
Alain Lascoux, Bernard Leclerc, Jean-Yves Thibon:
Green Polynomials and Hall-Littlewood Functions at Roots of Unity. 173-180
Bruno Leclerc:
A Finite Coxeter Group the Weak Bruhat Order of which is not Symmetric Chain. 181-185
Einar Steingrímsson:
Permutation Statistics of Indexed Permutations. 187-205

Raul Cordovil:
On the Homotopy Type of the Salvetti Complexes Determined by Simplicial Arrangements. 207-215
Jurek Czyzowicz, K. B. Lakshmanan, Andrzej Pelc:
Searching with Local Constraints on Error Patterns. 217-222
Charles Delorme:
Distance Biregular Bipartite Graphs. 223-238
Erhard Hexel:
On Paths of Greedoids and a Minor Characterization. 239-244
D. M. Jackson:
The Lattice of Non-crossing Partitions and the Birkhoff-Lewis Equations. 245-250
Robert Jajcay:
On a New Product of Groups. 251-252
Meir Katchalski, Roy Meshulam:
An Extremal Problem for Families of Pairs of Subspaces. 253-257
Jennifer D. Key, Marialuisa J. de Resmini:
Codewords for Projective Planes from Sets of Type (s, t). 259-268
Jack H. Koolen, Sergey V. Shpectorov:
Distance-regular Graphs the Distance Matrix of which has Only One Positive Eigenvalue. 269-275
Y. H. Harris Kwong, Douglas G. Rogers:
A Matrix Method for Counting Hamiltonian Cycles on Grid Graphs. 277-283
Jonathan D. H. Smith:
Association Schemes, Superschemes, and Relations Invariant Under Permutation Groups. 285-291
Marc Wagowski:
Strong Duality Property for Matroids with Coefficients. 293-302
Thomas Zaslavsky:
Frame Matroids and Biased Graphs. 303-307
Changgui Zhang:
La Fonction Gamma Considérée comme la Somme de Nombres Eulériens Généralisés. 309-315

Evgenii P. Baranovskii:
The Perfect Lattices Gamma(Uⁿ), and the Covering Density of Gamma(Uⁿ). 317-323
Barbara Baumeister:
Two New Sporadic Semibiplanes Related to M₂₂. 325-335
William Y. C. Chen:
A Bijection for Enriched Trees. 337-343
Robert J. Clarke, Dominique Foata:
Eulerian Calculus, I: Univariable Statistics. 345-362
Tung-Shan Fu, Tayuan Huang:
A Unified Approach to a Characterization of Grassmann Graphs and Bilinear Forms Graphs. 363-373
Anthony D. Gardiner, Cheryl E. Praeger:
On 4-Valent Symmetric Graphs. 375-381
Anthony D. Gardiner, Cheryl E. Praeger:
A Characterization of Certain Families of 4-Valent Symmetric Graphs. 383-397
Alfred Geroldinger, Rudolf Schneider:
The Cross Number of Finite Abelian Groups II. 399-405
Petr Savický:
On the Bent Boolean Functions That are Symmetric. 407-410

Laura Bader, Guglielmo Lunardon:
On Non-hyperelliptic Flocks. 411-415
Francesco Brenti:
q-Eulerian Polynomials Arising from Coxeter Groups. 417-441
Bor-Liang Chen, Ko-Wei Lih, Pou-Lin Wu:
Equitable Coloring and the Maximum Degree. 443-447
Yoav Dvir:
A Family of _Z Bases for the Ring of S_n Characters and Applications to the Decomposition of Kronecker Products. 449-457
Robert M. Erdahl, Sergei S. Ryshkov:
On Lattice Dicing. 459-481
Zhicheng Gao, L. Bruce Richmond:
Root Vertex Valency Distributions of Rooted Maps and Rooted Triangulations. 483-490
Ethan Lewis:
A Variation on the Method of Cartier and Foata via Covering Systems for Combinatorial Identities. 491-511

Wen-Chin Chen, Wen-Chun Ni:
Heap-ordered Trees, 2-Partitions and Continued Fractions. 513-517
R. W. Goldbach, H. L. Claasen:
A Primitive Non-symmetric 3-Class Association Scheme on 36 Elements with p¹₁₁ = 0 Exists and is Unique. 519-524
Nicholas Hamilton:
Some Maximal Arcs in Derived Dual Hall Planes. 525-532
Cécile Huybrechts:
Some Infinite Families of Locally Partial Geometries Generalizing the Classical Laguerre Planes. 533-543
Greg Kuperberg:
Self-complementary Plane Partitions by Proctor's Minuscule Method. 545-553
Daniel J. Mundfrom:
A Problem in Permutations: the Game of 'Mousetrap'. 555-560
P. A. Picon:
A More Precise Formulation of a Theorem of Landau in the Linear Case and Some Applications. 561-577
Leonard J. Schulman:
A Product Theorem for Intersection Families. 579-586
Zhi-Xiong Wen, Zhi-Ying Wen:
Some Properties of the Singular Words of the Fibonacci Word. 587-598

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