Results 81 to 90 of about 57,503 (225)

Permutation Polynomials Modulo N

open access: yes, 2009
Based on preliminary numerical computations, we give complete results for linear and quadratic polynomials. Rivest’s result holds in the linear case while there are plenty of counterexamples in the quadratic case.
Vadiraja Bhatta G., R., Shankar B., R.
openaire   +1 more source

Permutation polynomials over the rational numbers [PDF]

open access: yesPacific Journal of Mathematics, 1975
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

On the $\operatorname{rix}$ statistic and valley-hopping [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
This paper studies the relationship between the modified Foata$\unicode{x2013}$Strehl action (a.k.a. valley-hopping)$\unicode{x2014}$a group action on permutations used to demonstrate the $\gamma$-positivity of the Eulerian polynomials$\unicode{x2014 ...
Nadia Lafrenière, Yan Zhuang
doaj   +1 more source

Permutation-symmetric three-particle hyper-spherical harmonics based on the S3⊗SO(3)rot⊂O(2)⊗SO(3)rot⊂U(3)⋊S2⊂O(6) subgroup chain

open access: yesNuclear Physics B, 2017
We construct the three-body permutation symmetric hyperspherical harmonics to be used in the non-relativistic three-body Schrödinger equation in three spatial dimensions (3D).
Igor Salom, V. Dmitrašinović
doaj   +1 more source

Permutation polynomials induced from permutations of subfields, and some complete sets of mutually orthogonal latin squares

open access: yes, 2013
We present a general technique for obtaining permutation polynomials over a finite field from permutations of a subfield. By applying this technique to the simplest classes of permutation polynomials on the subfield, we obtain several new families of ...
Zieve, Michael E.
core  

Two-sided permutation statistics via symmetric functions

open access: yesForum of Mathematics, Sigma
Given a permutation statistic $\operatorname {\mathrm {st}}$ , define its inverse statistic $\operatorname {\mathrm {ist}}$ by . We give a general approach, based on the theory of symmetric functions, for finding the joint distribution of
Ira M. Gessel, Yan Zhuang
doaj   +1 more source

Symmetry classes of polynomials associated with the ‎direct ‎product of permutation groups [PDF]

open access: yesInternational Journal of Group Theory, 2014
Let $G_{i} $ be a subgroup of $ S_{m_{i}} , 1 leq i leq k$. Suppose $chi_{i}$ is an irreducible complex character of $G_{i}$. We consider $ G_{1}times cdots times G_{k} $ as subgroup of $ S_{m} $, where $ m=m_{1}+cdots +m_{k} $.
Esmaeil Babaei, Yousef Zamani
doaj  

A New Plaintext-Related Image Encryption Scheme Based on Chaotic Sequence

open access: yesIEEE Access, 2019
In order to improve the image encryption system's ability to resist plaintext, noise, and data loss attacks, in this paper, a new plaintext-related and chaos-based image encryption scheme is proposed, which includes two rounds of encryption operations ...
Shang Ma   +4 more
doaj   +1 more source

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