Journal of Combinatorial Theory, Series A, Volume 38

Volume 38, Number 1, January 1985

• Yoshimi Egawa:
  Association Schemes of Quadratic Forms. 1-14
  
• Herbert Edelsbrunner, Emo Welzl:
  On the Number of Line Separations of a Finite Set in the Plane. 15-29
  
• George Mills:
  Ramsey-Paris-Harrington Numbers for Graphs. 30-37
  
• Raul Cordovil:
  A Combinatorial Perspective on the Non-Radon Partitions. 38-47
  
• Christophe Reutenauer:
  The Shuffle Algebra on the Factors of a Word Is Free. 48-57
  
• Anne Delandtsheer:
  A Characterization of Certain 3-Dimensional Affino-projective Spaces. 58-65
  
• William M. Kantor:
  Homogeneous Designs and Geometric Lattices. 66-74
  
• Egon Schulte:
  The Existence of Non-tiles and Non-facets in Three Dimensions. 75-81
  
• Neil Hindman:
  Ramsey's Theorem for Sums, Products, and Arithmetic Progressions. 82-83
  
• Rudolf Mathon:
  A New Strongly Regular Graph. 84-86
  
• Ira M. Gessel:
  Short Proofs of Saalschütz's and Dixon's Theorems. 87-90
  
• Sharad S. Sane:
  On Extendable Planes of Order Ten. 91-93
  
• Henny A. Wilbrink:
  A Note on Planar Difference Sets. 94-95
  
• Edward A. Bender:
  Some Asymptotic Bijections. 96-98
  
• Judith Q. Longyear:
  A New Construction for Hadamard Matrices of Orders 8t+4. 99-104
  
• Dieter Jungnickel:
  Two Remarks on Affine Designs with Classical Parameters. 105-109
  
• Peter W. Shor:
  A Counterexample to the Triangle Conjecture. 110-112
  

Volume 38, Number 2, March 1985

• Michael Walker:
  Spreads Covered by Derivable Partial Spreads. 113-130
  
• Paul Erdös, Joel C. Fowler, Vera T. Sós, Richard M. Wilson:
  On 2-Designs. 131-142
  
• Janet Simpson Beissinger:
  The Enumeration of Irreducible Combinatorial Objects. 143-169
  
• Andrew M. Odlyzko, L. Bruce Richmond:
  On the Number of Distinct Block Sizes in Partitions of a Set. 170-181
  
• Fenn King, Kai Wang:
  On the g-Circulant Solutions to the Matrix Equation A^m = lambda J, II. 182-186
  
• M. Reza Emamy-Khansary:
  A Lower Bound Theorem for Polytope Pairs. 187-191
  
• Marshall Hall Jr.:
  Steiner Triple Systems with a Doubly Transitive Automorphism Group. 192-202
  
• Peter Köhler, Thomas Meixner, Michael Wester:
  The 2-Adic Affine Building of Type Ã₂ and Its Finite Projections. 203-209
  
• Tom C. Brown, Paul Erdös, Fan R. K. Chung, Ronald L. Graham:
  Quantitative Forms of a Theorem of Hilbert. 210-216
  
• Ronald L. Graham, Louis Solomon:
  Arrangements in Unitary and Orthogonal Geometry over Finite Fields. 217-229
  
• Ding-Zhu Du, Frank K. Hwang, E. Y. Yao:
  The Steiner Ratio Conjecture Is True for Five Points. 230-240
  
• Tuvi Etzion:
  On the Distribution of de Bruijn Sequences of Low Complexity. 241-253
  
• Alan P. Sprague:
  Rank 3 Incidence Structures Admitting Dual-Linear, Linear Diagram. 254-259
  

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