COMBINATORICS
2004
13 years 11 months ago
2004
We give the construction of a free commutative unital associative Nijenhuis algebra on a commutative unital associative algebra based on an augmented modified quasi-shuffle produc...
COMBINATORICS
2004
13 years 11 months ago
2004
We consider the Goldberg-Coxeter construction GCk,l(G0) (a generalization of a simplicial subdivision of the dodecahedron considered in [Gold37] and [Cox71]), which produces a pla...
COMBINATORICS
2004
13 years 11 months ago
2004
In this paper we bring together the areas of combinatorics and propositional satisfiability. Many combinatorial theorems establish, often constructively, the existence of positive...
COMBINATORICS
2004
13 years 11 months ago
2004
COMBINATORICS
2004
13 years 11 months ago
2004
Let (a1, a2,
COMBINATORICS
2004
13 years 11 months ago
2004
COMBINATORICS
2004
13 years 11 months ago
2004
Characteristic polynomials of random unitary matrices have been intensively studied in recent years: by number theorists in connection with Riemann zetafunction, and by theoretica...
COMBINATORICS
2004
13 years 11 months ago
2004
We consider Class-Uniformly Resolvable frames (CURFs), which are group divisible designs with partial resolution classes subject to the class-uniform condition. We derive the nece...
COMBINATORICS
2004
13 years 11 months ago
2004
We consider Class-Uniformly Resolvable Group Divisible Designs (CURGDD), which are resolvable group divisible designs in which each of the resolution classes has the same number o...
COMBINATORICS
2004
13 years 11 months ago
2004
We present a class of permutations for which the number of distinctly ordered subsequences of each permutation approaches an almost optimal value as the length of the permutation ...