Results 11 to 20 of about 516,804 (240)

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

Developing a Linear Algorithm for Cubing a Cyclic Permutation [PDF]

open access: yes, 1986
A linear algorithm is developed for cubing a cyclic permutation stored as a function in an array. This continues work discussed in [0] and [1] on searching for disciplined methods for developing and describing algorithms that deal with complicated ...
Xue, Jinyun, Gries, David
core   +4 more sources

Periodic Patterns of Signed Shifts [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
The periodic patterns of a map are the permutations realized by the relative order of the points in its periodic orbits. We give a combinatorial description of the periodic patterns of an arbitrary signed shift, in terms of the structure of the descent ...
Kassie Archer, Sergi Elizalde
doaj   +1 more source

Cyclic Permutations in Determining Crossing Numbers

open access: yesDiscussiones Mathematicae Graph Theory, 2022
The crossing number of a graph G is the minimum number of edge crossings over all drawings of G in the plane. Recently, the crossing numbers of join products of two graphs have been studied.
Klešč Marián, Staš Michal
doaj   +1 more source

The Crossing Numbers of Join Products of Paths and Cycles with Four Graphs of Order Five

open access: yesMathematics, 2021
The main aim of the paper is to establish the crossing numbers of the join products of the paths and the cycles on n vertices with a connected graph on five vertices isomorphic to the graph K1,1,3\e obtained by removing one edge e incident with some ...
Michal Staš
doaj   +1 more source

Study of noise in virtual distillation circuits for quantum error mitigation [PDF]

open access: yesQuantum
Virtual distillation has been proposed as an error mitigation protocol for estimating the expectation values of observables in quantum algorithms. It proceeds by creating a cyclic permutation of $M$ noisy copies of a quantum state using a sequence of ...
Pontus Vikstål   +2 more
doaj   +1 more source

On the crossing number of join product of the discrete graph with special graphs of order five

open access: yesElectronic Journal of Graph Theory and Applications, 2020
The main aim of the paper is to give the crossing number of join product G+Dn for the disconnected graph G of order five consisting of the complete graph K4 and of one isolated vertex.
Michal Staš
doaj   +1 more source

Permutation inference for the general linear model [PDF]

open access: yes, 2014
Permutation methods can provide exact control of false positives and allow the use of non-standard statistics, making only weak assumptions about the data.
Winkler, Anderson   +9 more
core   +1 more source

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   +2 more sources

Constructing Large Girth QC Protograph LDPC Codes Based on PSD-PEG Algorithm

open access: yesIEEE Access, 2017
For a given base graph, the lifted graph can be obtained by a copy-and-permute procedure. If the permutation is cyclic, the lifted graph corresponds to a quasi-cyclic (QC) protograph low-density parity-check (LDPC) code.
Xue-Qin Jiang   +3 more
doaj   +1 more source

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