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MOC
2000
79views more  MOC 2000»
14 years 9 months ago
Computational scales of Sobolev norms with application to preconditioning
Abstract. This paper provides a framework for developing computationally efficient multilevel preconditioners and representations for Sobolev norms. Specifically, given a Hilbert s...
James H. Bramble, Joseph E. Pasciak, Panayot Vassi...
COMBINATORICS
1999
85views more  COMBINATORICS 1999»
14 years 9 months ago
Permutation Patterns and Continued Fractions
We find, in the form of a continued fraction, the generating function for the number of (132)-avoiding permutations that have a given number of (123) patterns, and show how to ext...
Aaron Robertson, Herbert S. Wilf, Doron Zeilberger
DCC
1999
IEEE
14 years 9 months ago
On Perfect Ternary Constant Weight Codes
We consider the space of ternary words of length n and fixed weight w with the usual Hamming distance. A sequence of perfect single error correcting codes in this space is construc...
Jack H. van Lint, Ludo M. G. M. Tolhuizen
NETWORKS
2002
14 years 9 months ago
Augmented cubes
The n-dimensional augmented cube, denoted as AQn, a variation of the hypercube, possesses some properties superior to those of the hypercube. In this paper, we show that every ver...
Sheshayya A. Choudum, V. Sunitha
TCS
1998
14 years 9 months ago
Unary PCF is Decidable
We show that unary PCF, a very small fragment of Plotkin’s PCF [?], cidable observational pre-order, and that its fully abstract model is effectively presentable. This is in ma...
Ralph Loader