Journal of Combinatorial Theory, Series A, Volume 12

Volume 12, Number 1, January 1972

Larry S. Johnson, Verne J. Varineau: On Quasi-conjugate N-tuples of Matrices. 1-13 BibTeX
N. G. de Bruijn: Enumeration of Mapping Patterns. 14-20 BibTeX
Oliver Aberth: Tensor Representation of Finite Groups. 21-30 BibTeX
Raymond Quenneau: Sur les Suites s-additives. 31-71 BibTeX
John Riordan, Paul R. Stein: Arrangements on Chessboards. 72-80 BibTeX
J. C. Gower, D. A. Preece: Generating Successive Incomplete Blocks with Each Pair of Elements in at Least One Block. 81-97 BibTeX
H. J. Ryser: Symmetric Designs and Related Configurations. 98-111 BibTeX
Jennifer Wallis: On Integer Matrices Obeying Certain Matrix Equations. 112-118 BibTeX
Vera Pless: Symmetry Codes over GF(3) and New Five-Designs. 119-142 BibTeX
H. L. Abbott, Denis Hanson: Lower Bounds for Certain Types of van der Waerden Numbers. 143-146 BibTeX
Judit Csima, B. N. Datta: The DAD Theorem for Symmetric Non-negative Matrices. 147-152 BibTeX
Harold Fredricksen: Generation of the Ford Sequence of Length 2ⁿ, n Large. 153-154 BibTeX
Russell Merris, Stephen Pierce: The Bell Numbers and r-fold Transitivity. 155-157 BibTeX

Elwyn R. Berlekamp, Frank K. Hwang: Constructions for Balanced Howell Rotations for Bridge Tournaments. 159-166 BibTeX
Georges Hansel: Complexes et Décompositions Binomiales. 167-183 BibTeX
Haim Hanani: On Balanced Incomplete Block Designs with Blocks Having Five Elements. 184-201 BibTeX
Yu. M. Voloshin: Enumeration of Function Compositions. 202-216 BibTeX
Vasanti N. Bhat: Non-Isomorphic Solutions of Some Balanced Incomplete Block Designs II. 217-224 BibTeX
Vasanti N. Bhat: Non-Isomorphic Solutions of Some Balanced Incomplete Block Designs III. 225-252 BibTeX
Heiko Harborth: Solution of Steinhaus's Problem with Plus and Minus Signs. 253-259 BibTeX
Vasanti N. Bhat: On Inequivalent Balanced Incomplete Block Designs II. 260-267 BibTeX
Stanley E. Payne: On the Non-Existence of a Class of Configurations Which Are Nearly Generalized n-Gons. 268-282 BibTeX
D. J. Hartfiel, J. W. Crosby: A Lower Bound for the Permanent on U_n(k, k). 283-288 BibTeX
W. A. J. Luxemburg: On an Inequality of A. Khintchine for Zero-One Matrices. 289-296 BibTeX
Roy B. Levow: Lower Bounds for Permanents of Incidence Matrices. 297-303 BibTeX
Jack E. Graver: A Characterization of Symmetric Block Designs. 304-308 BibTeX

W. G. Bridges: A Note on Generalized (n, K, lambda)-Systems. 311-315 BibTeX
John Wesley Brown: An Extension of Mann's Theorem to a Triple of Mutually Orthogonal Latin Squares of Order 10. 316-318 BibTeX
Richard J. Turyn: An Infinite Class of Williamson Matrices. 319-321 BibTeX
R. G. Stanton, Joseph Douglas Horton: A Multiplication Theorem for Room Squares. 322-325 BibTeX
Douglas G. Kelly: A Condition Equivalent to Ferromagnetism for a Generalized Ising Model. 326-331 BibTeX
K. B. Reid, Ezra Brown: Doubly Regular Tournaments are Equivalent to Skew Hadamard Matrices. 332-338 BibTeX
F. M. Sioson: Counting Elements in Semigroups. 339-345 BibTeX
Judit Csima: Restricted Patterns. 346-356 BibTeX
J. Justin: Généralisation du Théorème de van der Waerden sur les Semi-groupes Répétitifs. 357-367 BibTeX
Edward Bertram: Even Permutations as a Product of Two Conjugate Cycles. 368-380 BibTeX
H. L. Abbott, Denis Hanson: Intersection Theorems for Systems of Sets. 381-389 BibTeX
W. O. Alltop: An Infinite Class of 5-Designs. 390-395 BibTeX
C. C. Chang: A Partition Theorem for the Complete Graph on omega^omega. 396-452 BibTeX
Leon Gerber: Spheres Tangent to All the Faces of a Simplex. 453-456 BibTeX