Discrete Mathematics, Volume 181

Volume 181, Numbers 1-3, February 1998

• R. Julian R. Abel, Hantao Zhang:
  Direct constructions for certain types of HMOLS. 1-17
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• Noga Alon, Eran Halperin:
  Bipartite subgraphs of integer weighted graphs. 19-29
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• Denise Amar, Stephan Brandt, Daniel Brito, Oscar Ordaz:
  Neighborhood conditions for balanced independent sets in bipartite graphs. 31-36
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• Kenneth P. Bogart, Garth Isaak:
  Proper and unit bitolerance orders and graphs. 37-51
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• André Bouchet, Werner Schwärzler:
  The delta-sum of matching delta-matroids. 53-63
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• Michel Burlet, Alexander V. Karzanov:
  Minimum weight (T, d)-joins and multi-joins. 65-76
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• Zhibo Chen:
  Integral sum graphs from identification. 77-90
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• K. Deiters, Marcel Erné:
  Negations and contrapositions of complete lattices. 91-111
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• Charles M. Fiduccia, Edward R. Scheinerman, Ann N. Trenk, Jennifer S. Zito:
  Dot product representations of graphs. 113-138
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• Ronald L. Graham, Boris D. Lubachevsky, Kari J. Nurmela, Patric R. J. Östergård:
  Dense packings of congruent circles in a circle. 139-154
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• Afrodita Iorgulescu:
  Connections between MV_n algebras and n-valued Lukasiewicz-Moisil algebras Part I. 155-177
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• Kyriakos Kilakos, F. Bruce Shepherd:
  Face extensions in planar cubic graphs. 179-191
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• Irene Sciriha:
  On the construction of graphs of nullity one. 193-211
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• Huei-Jan Shyr, Y. S. Tsai:
  Free submonoids in the monoid of languages. 213-222
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• Ann N. Trenk:
  On k-weak orders: Recognition and a tolerance result. 223-237
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• Jerzy Wojciechowski:
  On constructing snakes in powers of complete graphs. 239-254
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• Sanming Zhou, Jinjiang Yuan:
  Harper-type lower bounds and the bandwidths of the compositions of graphs. 255-266
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• Miklós Bóna:
  Permutations with one or two 132-subsequences. 267-274
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• M. Burzio, G. Ferrarese:
  The subdivision graph of a graceful tree is a graceful tree. 275-281
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• Derek Jennings, Kevin Byard:
  Qualified residue difference sets with zero. 283-288
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• Tomasz Luczak, Vojtech Rödl, Tomasz Schoen:
  Independent finite sums in graphs defined on the natural numbers. 289-294
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• Catherine Huafei Yan:
  Distributive laws for commuting equivalence relations. 295-298
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