COMBINATORICS
2004
13 years 4 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 4 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 4 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 4 months ago
2004
COMBINATORICS
2004
13 years 4 months ago
2004
Let (a1, a2,
COMBINATORICS
2004
13 years 4 months ago
2004
COMBINATORICS
2004
13 years 4 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 4 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 4 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 4 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 ...