JCT
2000
13 years 4 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 4 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 4 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 4 months ago
2000
A conjecture of V. S
JCT
2000
13 years 4 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 4 months ago
2000
JCT
2000
13 years 4 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 4 months ago
2000
JCT
2000
13 years 4 months ago
2000