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COMBINATORICS
2004
55views more  COMBINATORICS 2004»
13 years 6 months ago
On the Generation and Enumeration of some Classes of Convex Polyominoes
Alberto Del Lungo, Enrica Duchi, Andrea Frosini, S...
COMBINATORICS
2004
103views more  COMBINATORICS 2004»
13 years 6 months ago
Constructive Lower Bounds on Classical Multicolor Ramsey Numbers
Xu Xiaodong, Xie Zheng, Geoffrey Exoo, Stanislaw P...
COMBINATORICS
2004
96views more  COMBINATORICS 2004»
13 years 6 months ago
A Combinatorial Proof of the Sum of q-Cubes
We give a combinatorial proof of a q-analogue of the classical formula for the sum of cubes.
Kristina C. Garrett, Kristen Hummel
COMBINATORICS
2004
94views more  COMBINATORICS 2004»
13 years 6 months ago
There Exist Binary Circular 5/2+; Power Free Words of Every Length
We show that there exist binary circular 5/2+ power free words of every length.
Ali Aberkane, James D. Currie
COMBINATORICS
2004
76views more  COMBINATORICS 2004»
13 years 6 months ago
On Rainbow Arithmetic Progressions
Consider natural numbers {1,
Maria Axenovich, Dmitry Fon-Der-Flaass