IPL
2002
13 years 4 months ago
2002
This note reports on the number of s-partitions of a natural number n. In an s-partition of n each cell has the form 2k - 1 for some integer k. Such partitions have potential appl...
JCT
2008
13 years 4 months ago
2008
A graph G is k-linked if G has at least 2k vertices, and for every sequence x1, x2, . . . , xk, y1, y2, . . . , yk of distinct vertices, G contains k vertex-disjoint paths P1, P2,...
CORR
2008
Springer
13 years 5 months ago
2008
Springer
A "pairing function" J associates a unique natural number z to any two natural numbers x,y such that for two "unpairing functions" K and L, the equalities K(J(x...
CSC
2006
13 years 6 months ago
2006
An addition chain for a natural number n is a sequence 1 = a0 < a1 < . . . < ar = n of numbers such that for each 0 < i r, ai = aj + ak for some 0 k j < i. Thurbe...