Constructing Pseudo-Random Permutations with a Prescribed Structure
β Scribed by Moni Naor; Omer Reingold
- Publisher
- Springer
- Year
- 2002
- Tongue
- English
- Weight
- 59 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0933-2790
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
We initiate a general approach for the fast enumeration of permutations with a prescribed number of occurrences of ''forbidden'' patterns that seems to indicate that the enumerating sequence is always P-recursive. We illustrate the method completely in terms of the patterns ''abc, '' ''cab,'' and ''
d 2,n 2 ) is a bipartite graphical sequence, if there is a bipartite graph G with degrees {D 1 , D 2 } (i.e., G has two independent vertex sets In other words, {D 1 , D 2 } is a bipartite graphical sequence if and only if there is an n 1 1 n 2 matrix of 0's and 1's having d 1j 1 1's in row j 1 and