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COMBINATORICS
2002
104views more  COMBINATORICS 2002»
13 years 11 months ago
Exchange Symmetries in Motzkin Path and Bargraph Models of Copolymer Adsorption
In a previous work [26], by considering paths that are partially weighted, the generating function of Dyck paths was shown to possess a type of symmetry, called an exchange relati...
E. J. Janse van Rensburg, A. Rechnitzer
COMBINATORICS
2002
69views more  COMBINATORICS 2002»
13 years 11 months ago
Spanning Trees and Function Classes
If G = Kn is the complete graph, the classical Pr
Jeffrey B. Remmel, S. G. Williamson
COMBINATORICS
2002
99views more  COMBINATORICS 2002»
13 years 11 months ago
A Generalization of Simion-Schmidt's Bijection for Restricted Permutations
We consider the two permutation statistics which count the distinct pairs obtained from the final two terms of occurrences of patterns 1
Astrid Reifegerste
COMBINATORICS
2002
68views more  COMBINATORICS 2002»
13 years 11 months ago
On the Connectivity of Graphs Embedded in Surfaces II
Michael D. Plummer, Xiaoya Zha
COMBINATORICS
2002
68views more  COMBINATORICS 2002»
13 years 11 months ago
Holes in Graphs
Yuejian Peng, Vojtech Rödl, Andrzej Rucinski
COMBINATORICS
2002
90views more  COMBINATORICS 2002»
13 years 11 months ago
Ternary Constant Weight Codes
Let A3(n, d, w) denote the maximum cardinality of a ternary code with length n, minimum distance d, and constant Hamming weight w. Methods for proving upper and lower bounds on A3...
Patric R. J. Östergård, Mattias Svanstr...
COMBINATORICS
2002
76views more  COMBINATORICS 2002»
13 years 11 months ago
Catalan Traffic at the Beach
Heinrich Niederhausen
COMBINATORICS
2002
86views more  COMBINATORICS 2002»
13 years 11 months ago
Computation of the Vertex Folkman Numbers F(2, 2, 2, 4;6) and F(2, 3, 4;6)
Evgeni Nedialkov, Nedyalko Dimov Nenov
COMBINATORICS
2002
83views more  COMBINATORICS 2002»
13 years 11 months ago
The Minimum Number of Monotone Subsequences
Erdos and Szekeres showed that any permutation of length n k2 + 1 contains
Joseph Samuel Myers