Journal of Combinatorial Theory, Series A, Volume 13

Volume 13, Number 1, July 1972

C. St. J. A. Nash-Williams: Simple Constructions for Balanced Incomplete Block Designs with Block Size Three. 1-6 BibTeX
Samuel Huang, Dov Tamari: Problems of Associativity: A Simple Proof for the Lattice Property of Systems Ordered by a Semi-associative Law. 7-13 BibTeX
S. Sherman: Positive Definiteness and Positive Differences. 14-16 BibTeX
E. Keith Lloyd: Riemann Surface Transformation Groups. 17-27 BibTeX
William Graves: A Sheaf of Bicomodules over the Incidence Coalgebra. 28-39 BibTeX
Edward A. Bender, Donald E. Knuth: Enumeration of Plane Partitions. 40-54 BibTeX
W. H. Mills: On the Covering of Pairs by Quadruples I. 55-78 BibTeX
W. H. Mills: Three Mutually Orthogonal Latin Squares. 79-82 BibTeX
Martin Cohn, Abraham Lempel: Cycle Decomposition by Disjoint Transpositions. 83-89 BibTeX
Françoise Dejean: Sur un Théorème de Thue. 90-99 BibTeX
B. R. McDonald: Diagonal Equivalence of Matrices over a Finite Local Ring. 100-104 BibTeX
Jacqueline Shalhevet: A Characterization of Separating Distinguished Collections Containing the Maximum Number of Sets. 105-115 BibTeX
W. G. Bridges: Near 1-Designs. 116-126 BibTeX
Morris Plotkin: Decomposition of Hadamard Matrices. 127-130 BibTeX
Henry B. Mann, Daniel Shanks: A Necessary and Sufficient Condition for Primality, and Its Source. 131-134 BibTeX
David C. Kurtz: A Note on Concavity Properties of Triangular Arrays of Numbers. 135-139 BibTeX
Hansraj Gupta: Restricted Solid Partitions. 140-144 BibTeX
Norbert Sauer: On the Density of Families of Sets. 145-147 BibTeX

Volume 13, Number 2, September 1972

Daniel I. Barnea: A Naturally Ordered Enumeration of Compositions. 149-154 BibTeX
Jin Bai Kim: Idempotents in Symmetric Semigroups. 155-161 BibTeX
Roger R. Davidson, Robert E. Odeh: Some Inconsistencies in Judging Problems. 162-169 BibTeX
Bruce Faaland: On the Number of Solutions to a Diophantine Equation. 170-175 BibTeX
W. A. Beyer, M. B. Wells: Lower Bound for the Connective Constant of a Self-Avoiding Walk on a Square Lattice. 176-182 BibTeX
Gustavus J. Simmons: An Extremal Problem in the Uniform Covering of Finite Sets. 183-197 BibTeX
J. N. Srivastava: Some General Existence Conditions for Balanced Arrays of Strength t and 2 Symbols. 198-206 BibTeX
I. M. Chakravarti, S. Ikeda: Construction of Association Schemes and Designs from Finite Groups. 207-219 BibTeX
Richard M. Wilson: An Existence Theory for Pairwise Balanced Designs I. Composition Theorems and Morphisms. 220-245 BibTeX
Richard M. Wilson: An Existence Theory for Pairwise Balanced Designs II. The Structure of PBD-Closed Sets and the Existence Conjectures. 246-273 BibTeX
Bernt Lindström: A Theorem on Families of Sets. 274-277 BibTeX
H. W. Gould: A New Symmetrical Combinatorial Identity. 278-286 BibTeX
John Haigh: Random Equivalence Relations. 287-295 BibTeX

Volume 13, Number 3, November 1972

Joseph B. Kruskal: The Theory of Well-Quasi-Ordering: A Frequently Discovered Concept. 297-305 BibTeX
C. D. O'Shaughnessy: On Room Squares of Order 6m + 2. 306-314 BibTeX
Harald Scheid: Über die Möbiusfunktion einer lokal endlichen Halbordnung. 315-331 BibTeX
Ladnor Geissinger, William Graves: The Category of Complete Algebraic Lattices. 332-338 BibTeX
Charles C. Lindner: Finite Embedding Theorems for Partial Latin Squares, Quasi-groups, and Loops. 339-345 BibTeX
P. Mani: Spheres with Few Vertices. 346-352 BibTeX
A. Diego, A. Germani: Extremal Measures with Prescribed Marginals. 353-366 BibTeX
C. J. Everett, N. Metropolis: On Completely Normal (0, 1)-Matrices and Symmetrizability. 367-373 BibTeX
Tina H. Straley: Construction of Steiner Quasigroups Containing a Specified Number of Subquasigroups of a Given Order. 374-382 BibTeX
Joseph Kahane, Robert Marr: On a Class of Stochastic Pairing Processes and the Mycielski-Ulam Notions of Genealogical Distance. 383-400 BibTeX
Melvin Tainiter: Generating Functions on Idempotent Semigroups II. Semilattice Variables and Independence. 401-421 BibTeX
Anthony J. W. Hilton: A Simplification of Moore's Proof of the Existence of Steiner Triple Systems. 422-425 BibTeX
I. M. Chakravarti, K. V. Suryanarayana: Partial Difference Sets and Partially Balanced Weighing Designs for Calibration and Tournaments. 426-431 BibTeX
H. L. Abbott, A. Liu: On Partitioning Integers into Progression Free Sets. 432-436 BibTeX
Michael Goldberg: The Space-Filling Pentahedra. 437-443 BibTeX