Discrete Mathematics, Volume 253

Volume 253, Number 1-3, June 2002

• Frank K. Hwang, Xuding Zhu:
  Preface. 1-
  
• Hung-Lin Fu, I-Fan Sun:
  The typenumber of trees. 3-10
  
• Hung-Lin Fu, Wei-Hsin Hu:
  Ascending subgraph decompositions of regular graphs. 11-18
  
• Sui-Xiang Gao, Ding-Zhu Du, Xiao-Dong Hu, Xiaohua Jia:
  Rivest-Vuillemin conjecture is true for monotone boolean functions with twelve variables. 19-34
  
• Sandi Klavzar, Petra Zigert, Gunnar Brinkmann:
  Resonance graphs of catacondensed even ring systems are median. 35-43
  
• Norbert W. Sauer:
  A Ramsey theorem for countable homogeneous directed graphs. 45-61
  
• Wai Chee Shiu, Peter Che Bor Lam, Hee Lin Cheng:
  Edge-gracefulness of the composition of paths with null graphs. 63-76
  
• Claude Tardif, Xuding Zhu:
  On Hedetniemi's conjecture and the colour template scheme. 77-85
  
• Wei-Fan Wang, Ko-Wei Lih:
  A new proof of Melnikov's conjecture on the edge-face coloring of plane graphs. 87-95
  
• Hong-Gwa Yeh:
  d-Disjunct matrices: bounds and Lova'sz Local Lemma. 97-107