Journal of Combinatorial Theory, Series A, Volume 20

Volume 20, Number 1, January 1976

• Peter Frankl: On Sperner Families Satisfying an Additional Condition. 1-11 BibTeX
• T. D. Parsons: Ramsey Graphs and Block Designs. 12-19 BibTeX
• Clement W. H. Lam: Nth Power Residue Addition Sets. 20-33 BibTeX
• James P. Conlan: Derived Tilings. 34-40 BibTeX
• Curtis Greene, Daniel J. Kleitman: The Structure of Sperner k-Families. 41-68 BibTeX
• Curtis Greene: Some Partitions Associated with a Partially Ordered Set. 69-79 BibTeX
• Curtis Greene, Daniel J. Kleitman: Strong Versions of Sperner's Theorem. 80-88 BibTeX
• Daniel J. Kleitman: Some New Results on the Littlewood-Offord Problem. 89-113 BibTeX
• William T. Trotter: A Generalization of Hiraguchi's: Inequality for Posets. 114-123 BibTeX
• Masahiko Sato: On Formal Fractions Associated with the Symmetric Groups. 124-131 BibTeX

Volume 20, Number 2, March 1976

• John D. Fulton: PBIB Designs with m Associate Classes Induced by Full Rank Matrices Modulo p^m. 133-144 BibTeX
• B. R. McDonald: Simple Subrings of Matrix Rings over Finite Fields. 145-153 BibTeX
• K. Kjeldsen: On the Cycle Structure of a Set of Nonlinear Shift Registers with Symmetric Feedback Functions. 154-169 BibTeX
• Patrick Scott Mara: Triangulations for the Cube. 170-177 BibTeX
• Karsten Steffens: Ergebnisse aus der Transversalentheorie. I. 178-201 BibTeX
• Karsten Steffens: Ergebnisse aus der Transversalentheorie. II. 202-229 BibTeX
• Philippe Delsarte: Association Schemes and t-Designs in Regular Semilattices. 230-243 BibTeX
• Thomas Zaslavsky: Maximal Dissections of a Simplex. 244-257 BibTeX
• Surya Prakash Rao Hebbare, G. A. Patwardhan: On Some Constructions of Modular Hadamard Matrices. 258-263 BibTeX

Volume 20, Number 3, May 1976

• A.-A. A. Jucys: The Number of Distinct Latin Squares as a Group-Theoretical Constant. 265-272 BibTeX
• Michael J. Klass: A Generalization of Burnside's Combinatorial Lemma. 273-278 BibTeX
• M. Cates, Paul Erdös, N. Hindman, Bruce Rothschild: Partition Theorems for Subsets of Vector Spaces. 279-291 BibTeX
• F. M. Dekking: On Repetitions of Blocks in Binary Sequences. 292-299 BibTeX
• O. S. Rothaus: On "Bent" Functions. 300-305 BibTeX
• Michel Deza: Matrices Dont Deux Lignes Quelconque Coïncident dans un Nombre Donne de Positions Communes. 306-318 BibTeX
• Alphonse Baartmans, Kenneth J. Danhof: On Representing Block Designs in Terms of Their Automorphisms. 319-326 BibTeX
• Robert W. Shannon: A Lower Bound on the Number of Cells in Arrangements of Hyperplanes. 327-335 BibTeX
• Richard P. Stanley: Binomial Posets, Möbius Inversion, and Permutation Enumeration. 336-356 BibTeX
• J. G. Kingston: Comparison of Scoring Systems in Two-Sided Competitions. 357-362 BibTeX
• D. Craggs: On the No-Three-in-Line Problem. 363-364 BibTeX
• N. J. Patterson: A Four-Dimensional Kerdock Set over GF(3). 365-366 BibTeX
• Daniel I. A. Cohen: An Explanation of the First Digit Phenomenon. 367-370 BibTeX
• Frank Harary, Allen J. Schwenk: On Tactical Configurations with No Four-Cycles. 371-374 BibTeX
• Louis W. Shapiro: A Short Proof of an Identity of Touchard's Concerning Catalan Numbers. 375-376 BibTeX
• Jay Rosen: The Number of Product-Weighted Lead Codes for Ballots and Its Relation to the Ursell Functions of the Linear Ising Model. 377-384 BibTeX
• Leslie E. Shader: All Right Triangles Are Ramsey in E². 385-389 BibTeX
• Daniel J. Kleitman: Extremal Properties of Collections of Subsets Containing No Two Sets and Their Union. 390-392 BibTeX
• Kevin T. Phelps: Some Sufficient Conditions for a Steiner Triple System to Be a Derived Triple System. 393-397 BibTeX
• B. L. Rothschild: Characterizing k-Flats in Geometric Designs. 398-403 BibTeX