Journal of Combinatorial Theory, Series A, Volume 25

Volume 25, Number 1, July 1978

A. C. Mukhopadhyay: Lower Bounds on m_t(r, s). 1-13
Noboru Hamada: On a Geometrical Method of Construction of Maximal t-Linearly Independent Sets. 14-28
John E. Olson, Joel H. Spencer: Balancing Families of Sets. 29-37
Charles M. Stein: Asymptotic Evaluation of the Number of Latin Rectangles. 38-49
I. Rabinovitch: The Dimension of Semiorders. 50-61
Robert E. Kibler: A Summary of Noncyclic Difference Sets, k<20. 62-67
I. Rabinovitch: An Upper Bound on the "Dimension of Interval Orders". 68-71
H. L. Abbott, A. Liu: A Covering Theorem for Quasi-groups. 72-75
E. T. Parker: An Inequality for Pseudo-Subplanes of Sets of Orthogonal Latin Squares. 76
Bernt Lindström: On Strong Joins and Pushout of Combinatorial Geometries. 77-79
Alexander Schrijver: A Short Proof of Minc's Conjecture. 80-83
Scott A. Vanstone: Pairwise "Orthogonal Generalized Room Squares" and Equidistant Permutation Arrays. 84-89
L. Carlitz: A Note on q-Eulerian Numbers. 90-94

Eric Mendelsohn: On the Groups of Automorphisms of Steiner Triple and Quadruple Systems. 97-104
Frank K. Hwang, Shen Lin: Distribution of Integers into k-tuples with Prescribed Conditions. 105-116
Kevin T. Phelps: Conjugate Orthogonal Quasigroups. 117-127
A. C. Mukhopadhyay: Some Infinite Classes of Hadamard Matrices. 128-141
Harold Finkelstein, K. I. Mandelberg: On Solutions of "Equations in Symmetric Groups". 142-152
G. F. Clements: The Minimal Number of Basic Elements in a Multiset Antichain. 153-162
Dominique Perrin: Le degré minimal du groupe d'un code bipréfixe fini. 163-173
Keith R. Milliken: Hindman's Theorem and Groups. 174-180
D. M. Jackson: Some Results on "Product-Weighted Lead Codes". 181-187
Dwight Duffus, Ivan Rival: Separable Subsets of a Finite Lattice. 188-192
Ronald D. Baker: An Elliptic Semiplane. 193-195
Wayne M. Dymàcek, D. P. Roselle: Circular Permutations by Number of Rises and Successions. 196-201
Robert A. Liebler: A Note on the Hering-Ott Planes. 202-204
Paul Erdös, George B. Purdy: Some Combinatorial Problems in the Plane. 205-210

Anthony V. Geramita, Joan M. Geramita: Complex Orthogonal Designs. 211-225
Philippe Delsarte: Bilinear Forms over a Finite Field, with Applications to Coding Theory. 226-241
I. Debroey, Joseph A. Thas: On Semipartial Geometries. 242-250
Craig M. Cordes: A New Type of Combinatorial Design. 251-257
Cheryl E. Praeger: Doubly Transitive Automorphism Groups of Block Designs. 258-266
Eric Verheiden: Integral and Rational Completions of Combinatorial Matrices. 267-276
Richard Askey, Mourad E. H. Ismail, Tom Koornwinder: Weighted Permutation Problems and Laguerre Polynomials. 277-287
F. J. MacWilliams, Andrew M. Odlyzko, N. J. A. Sloane, Harold N. Ward: Self-Dual Codes over GF(4). 288-318
László Lovász: Kneser's Conjecture, Chromatic Number, and Homotopy. 319-324
Imre Bárány: A Short Proof of Kneser's Conjecture. 325-326