Journal of Combinatorial Theory, Series A, Volume 11

Volume 11, Number 1, July 1971

K. Walker: An Upper Bound for the Ramsey Number M(5, 4). 1-10 BibTeX
M. N. Vartak, G. A. Patwardhan: The 2-Adjugate mod 2 Class of Designs. 11-26 BibTeX
I. J. Good: The Factorization of a Sum of Matrices and the Multivariate Cumulants of a Set of Quadratic Expressions. 27-37 BibTeX
K. A. Bush: Unbalanced Hadamard Matrices and Finite Projective Planes of Even Order. 38-44 BibTeX
W. Bonnice, L. M. Kelly: On the Number of Ordinary Planes. 45-53 BibTeX
T. V. Narayana, R. M. Mathsen, J. Sarangi: An Algorithm for Generating Partitions and Its Applications. 54-61 BibTeX
Jin Bai Kim: On the Structure of Linear Semigroups. 62-71 BibTeX
M. L. Narayana Rao, D. J. Rodabaugh, F. W. Wilke, J. L. Zemmer: A New Class of Finite Translation Planes Obtained from the Exceptional Near-Fields. 72-92 BibTeX
Marshall Saade: Generating Operations of Point Algebras. 93-100 BibTeX
J. F. Lawless: Note on a Family of BIBD's and Sets of Mutually Orthogonal Latin Squares. 101-105 BibTeX
Svein Mossige: Constructive Theorems for the Truth Table of the Ford Sequence. 106-110 BibTeX

J. Schönheim: A Generalization of Results of P. Erdös, G. Katona, and D. J. Kleitman concerning Sperner's Theorem. 111-117 BibTeX
Carl Maneri, Robert Silverman: A Combinatorial Problem with Applications to Geometry. 118-121 BibTeX
S. G. Williamson: Symmetry Operators of Kranz Products. 122-138 BibTeX
J. F. Lawless: An Investigation of Bhattacharya-Type Designs. 139-147 BibTeX
Germain Kreweras: Les couples "partie-partition" et certains dénombrements qui s'y rattachent. 148-156 BibTeX
D. J. Foulis, C. H. Randall: Lexicographic Orthogonality. 157-162 BibTeX
Alun O. Morris: Generalizations of the Cauchy and Schur Identities. 163-169 BibTeX
Melvin Tainiter: Incidence Algebras on Generalized Semigroups I. 170-177 BibTeX
Jean-Marie Goethals: On the Golay Perfect Binary Code. 178-186 BibTeX
N. S. Mendelsohn: Latin Squares Orthogonal to their Transposes. 187-189 BibTeX
W. O. Alltop: Some 3-Designs and a 4-Design. 190-195 BibTeX
D. P. Roselle, T. C. Thomasson Jr.: On Generalized Langford Sequences. 196-199 BibTeX

George E. Martin: Symmetric Gobos in a Finite Projective Plane. 201-207 BibTeX
F. Buekenhout: An Axiomatic of Inversive Spaces. 208-212 BibTeX
Nguyen-Huu-Bong: Some Combinatorial Properties of Summation Operators. 213-221 BibTeX
William H. Graves: A Categorical Approach to Combinatorial Geometry. 222-232 BibTeX
J. G. Kalbfleisch, R. G. Stanton, Joseph Douglas Horton: On Covering Sets and Error-Correcting Codes. 233-250 BibTeX
Benjamin Halpern: Almost Fixed Points for Subsets of Zⁿ. 251-257 BibTeX
L. Carlitz, D. P. Roselle, R. A. Scoville: Some Remarks on Ballot-Type Sequences of Positive Integers. 258-271 BibTeX
Michael Aschbacher: On Collineation Groups of Symmetric Block Designs. 272-281 BibTeX
G. M. Saha, M. N. Das: Construction of Partially Balanced Incomplete Block Designs through 2ⁿ Factorials and Some New Designs of Two Associate Classes. 282-295 BibTeX
Jennifer Wallis: Amicable Hadamard Matrices. 296-298 BibTeX
Edward Spence: Some New Symmetric Block Designs. 299-302 BibTeX
Roger C. Entringer, Douglas E. Jackson: Matrices Permutable to * Matrices. 303-306 BibTeX
Neal Zierler: Trinomials with Non-Conjugate Roots of the Same Prime Order. 307-309 BibTeX