JCT
2000
13 years 11 months ago
2000
![An Upper Bound for B2[2] Sequences](https://www.sciweavers.org/files/imagecache/thumbnail/default/content.jpg "An Upper Bound for B2[2] Sequences")
Abstract. We introduce a new counting method to deal with B2[2] sequences, getting a new upper bound for the size of these sequences, F(N, 2)
JCT
2000
13 years 11 months ago
2000
We study discrete Green's functions and their relationship with discrete Laplace equations. Several methods for deriving Green's functions are discussed. Green's fu...
JCT
2000
13 years 11 months ago
2000
We answer a question posed by Lampert and Slater [7]. Consider a sequence of real numbers qn in the interval [0, 1] defined by q0 = 0, q1 = 1, and, for n 1, qn+1 equals an averag...
JCT
2000
13 years 11 months ago
2000
A conjecture of V. S
JCT
2000
13 years 11 months ago
2000
We prove that -matroids associated with maps on compact closed surfaces are representable, with the space of representation provided by cohomology of the surface with punctured po...
JCT
2000
13 years 11 months ago
2000
JCT
2000
13 years 11 months ago
2000
Let Q(k, l) be a poset whose Hasse diagram is a regular spider with k+1 legs having the same length l (cf. Fig. 1). We show that for any n 1 the nth cartesian power of
JCT
2000
13 years 11 months ago
2000
JCT
2000
13 years 11 months ago
2000