Results 11 to 20 of about 203,327 (292)

From Permutation Patterns to the Periodic Table [PDF]

open access: yesریاضی و جامعه, 2023
(The above abstract has been extracted by the translator from the original article (L. Pudwell, From Permutation Patterns to the Periodic Table, Notices of the American Mathematical Society, 67 994–1001.))Abstract: Permutation patterns is a burgeoning ...
Saeid Alikhani, Maryam Safazadeh
doaj   +1 more source

To permute or not to permute [PDF]

open access: yesBioinformatics, 2006
Abstract Permutation test is a popular technique for testing a hypothesis of no effect, when the distribution of the test statistic is unknown. To test the equality of two means, a permutation test might use a test statistic which is the difference of the two sample means in the univariate case.
Yifan Huang   +3 more
openaire   +3 more sources

Permutation Resemblance

open access: yesIEEE Transactions on Information Theory, 2023
Motivated by the problem of constructing bijective maps with low differential uniformity, we introduce the notion of permutation resemblance of a function, which looks to measure the distance a given map is from being a permutation. We prove several results concerning permutation resemblance and show how it can be used to produce low differentially ...
Li-An Chen, Robert S. Coulter
openaire   +4 more sources

Permutations on the Random Permutation [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2015
The random permutation is the Fraïssé limit of the class of finite structures with two linear orders. Answering a problem stated by Peter Cameron in 2002, we use a recent Ramsey-theoretic technique to show that there exist precisely 39 closed supergroups of the automorphism group of the random permutation, and thereby expose all symmetries of this ...
Julie Linman, Michael Pinsker
openaire   +3 more sources

Prolific Permutations [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2021
The concept of prolificity was previously introduced by the authors in the context of compositions of integers. We give a general interpretation of prolificity that applies across a range of relational structures defined in terms of counting embeddings.
Michael Albert 0001, Murray Tannock
openaire   +1 more source

Endo-permutation modules as sources of simple modules. [PDF]

open access: yes, 2003
The source of a simple $kG$-module, for a finite $p$-solvable group $G$ and an algebraically closed field $k$ of prime characteristic $p$, is an endo-permutation module (see~\cite{Pu1} or~\cite{Th}). L.
Mazza, Nadia
core   +4 more sources

Generalized permutation patterns - a short survey [PDF]

open access: yes, 2010
An occurrence of a classical pattern p in a permutation π is a subsequence of π whose letters are in the same relative order (of size) as those in p.
Steingrimsson, Einar
core   +3 more sources

A Novel Chaotic Permutation-Substitution Image Encryption Scheme Based on Logistic Map and Random Substitution

open access: yesIEEE Access, 2022
Privacy is a serious concern related to sharing videos or images among people over the Internet. As a method to preserve images’ privacy, chaos-based image encryption algorithms have been used widely to fulfil such a requirement.
Jameel Arif   +6 more
doaj   +1 more source

PERMUTATIONS [PDF]

open access: yesCladistics, 1994
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/31724/1/0000662 ...
Farris, James S.   +3 more
openaire   +4 more sources

Chaotic Color Image Encryption Based on Eight-Base DNA-Level Permutation and Diffusion

open access: yesEntropy, 2023
Images, as a crucial information carrier in the era of big data, are constantly generated, stored, and transmitted. Determining how to guarantee the security of images is a hot topic in the information security community. Image encryption is a simple and
Wei Fan, Taiyong Li, Jianan Wu, Jiang Wu
doaj   +1 more source

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