Complexity of sequences defined by billiard in the cube
Compositions of graphs revisited.
Compositions of n as alternating sequences of weakly increasing and strictly decreasing partitions
Compositions and partitions of positive integers are often studied in separate frameworks where partitions are given by q-series generating functions and compositions exhibiting specific patterns are designated by generating functions for these patterns. Here, we view compositions as alternating sequences of weakly increasing and strictly decreasing partitions (i.e. alternating blocks). We obtain generating functions for the number of such partitions in terms of the size of the composition, the...
Computing the generating function of a series given its first few terms.
Computing the molecular expansion of species with the Maple package Devmol.
Computing the period of an Ehrhart quasi-polynomial.
Computing tournament sequence numbers efficiently with matrix techniques.
Congruence properties for a class of arithmetical functions.
Congruences for Stirling numbers and Eulerian numbers
Congruences pour les nombres de Genocchi de 2e espèce
Consecutive patterns: from permutations to column-convex polyominoes and back.
Continued fractions and Catalan problems.
Converting between generalized Bell, Lah, Stirling, and Tanh numbers.
Correction to "The bias of three pseudo-random shuffles", Volume 22, 2/3 (1981), p. 268-292.
Corrigendum: A note on self-conjugate -color partitions.
Counting 1324, 4231-avoiding permutations.
Counting 1324-avoiding permutations.
Counting biorders.
Counting colorings on varieties.
We present a combinatorial mechanism for counting certain objects associated to a variety over a finite field. The basic example is that of counting conjugacy classes of the general linear group. We discuss how the method applies to counting these and also to counting unipotent matrices and pairs of commuting matrices.[Proceedings of the Primeras Jornadas de Teoría de Números (Vilanova i la Geltrú (Barcelona), 30 June - 2 July 2005)].
Counting -polytopes with vertices.