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» A q-enumeration of alternating permutations
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DAM
2008
101views more  DAM 2008»
13 years 5 months ago
Longest alternating subsequences of k-ary words
Recently, Stanley [13] studied the length of the longest alternating subsequence of a permutation in the symmetric group, where a sequence a, b, c, d, . . . is alternating if a &g...
Toufik Mansour
MOR
2006
73views more  MOR 2006»
13 years 5 months ago
Permuted Standardized Time Series for Steady-State Simulations
We describe an extension procedure for constructing new standardized time series procedures from existing ones. The approach is based on averaging over sample paths obtained by per...
James M. Calvin, Marvin K. Nakayama
RSA
2008
89views more  RSA 2008»
13 years 5 months ago
Simple permutations mix even better
We study the random composition of a small family of O(n3 ) simple permutations on {0, 1}n . Specifically we ask how many randomly selected simple permutations need be composed to...
Alex Brodsky, Shlomo Hoory
ISCIS
2003
Springer
13 years 11 months ago
An Alternative Compressed Storage Format for Sparse Matrices
The handling of the sparse matrix vector product(SMVP) is a common kernel in many scientific applications. This kernel is an irregular problem, which has led to the development of...
Anand Ekambaram, Eurípides Montagne