6833 search results - page 21 / 1367 » Some two-character sets |
JAT
2011
14 years 6 months ago
2011
We investigate compactness and asymptotic behaviour of the entropy numbers of embeddings B s1,s1 p1,q1 (Rn , U) → B s2,s2 p2,q2 (Rn , U) . Here Bs,s p,q (Rn, U) denotes a 2-micr...
DM
1998
14 years 11 months ago
1998
A tree function (TF) t on a ÿnite set X is a real function on the set of the pairs of elements of X satisfying the four-point condition: for all distinct x; y; z; w ∈ X; t(xy)+...
ACTA
2000
14 years 11 months ago
2000
The paper refers to the Collatz's conjecture. In the first part, we present some equivalent forms of this conjecture and a slight generalization of a former result from [1]. T...
IPPS
2000
IEEE
15 years 4 months ago
2000
IEEE
Abstract. In this paper, we consider parallelizability of some Pcomplete problems. First we propose a parameter which indicates parallelizability for a convex layers problem. We pr...
DOLAP
1999
ACM
15 years 4 months ago
1999
ACM
Recently numerous proposals for modelling and querying Multidimensional Databases (MDDB) are proposed. Among the still open problems there is a rigorous classification of the diff...