Results 11 to 20 of about 45,307 (270)

Cyclic Sieving for cyclic codes [PDF]

open access: yesFinite Fields and Their Applications, 2021
Prompted by a question of Jim Propp, this paper examines the cyclic sieving phenomenon (CSP) in certain cyclic codes. For example, it is shown that, among dual Hamming codes over $F_q$, the generating function for codedwords according to the major index statistic (resp. the inversion statistic) gives rise to a CSP when $q=2$ or $q=3$ (resp. when $q=2$).
Mason, Alex   +2 more
openaire   +2 more sources

Cyclic Matroids

open access: yesSIAM Journal on Discrete Mathematics, 2023
For all positive integers $s$ and $t$ exceeding one, a matroid $M$ on $n$ elements is {\em nearly $(s, t)$-cyclic} if there is a cyclic ordering $σ$ of its ground set such that every $s-1$ consecutive elements of $σ$ are contained in an $s$-element circuit and every $t-1$ consecutive elements of $σ$ are contained in a $t$-element cocircuit. In the case
Nick Brettell   +2 more
openaire   +3 more sources

Quasi-Cyclic Subcodes of Cyclic Codes [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2017
We completely characterize possible indices of quasi-cyclic subcodes in a cyclic code for a very broad class of cyclic codes. We present enumeration results for quasi-cyclic subcodes of a fixed index and show that the problem of enumeration is equivalent to enumeration of certain vector subspaces in finite fields.
Belfiore, Jean-Claude   +2 more
openaire   +6 more sources

Ability of dairy cows to be inseminated according to breed and genetic merit for production traits under contrasting pasture-based feeding systems

open access: yesAnimal, 2017
Strong genetic selection on production traits is considered to be responsible for the declined ability of dairy cows to ensure reproduction. The present study aimed to quantify the effect of genetic characteristics (breeds and genetic merit for ...
N. Bedere   +4 more
doaj   +1 more source

Evolution of Pliocene climate cyclicity at Hole 806B (5-2 Ma); oxygen isotope record [PDF]

open access: yes, 1993
A detailed Pliocene oxygen isotope record from the Ontong Java Plateau, based on measurements of the surface-dwelling planktonic foraminifer Globigerinoides sacculifer, was produced for the period from 5 to 2 Ma. The record documents major long and short-
Backman, Jan   +4 more
core   +2 more sources

Lithological and biostratigraphic characteristics of the Upper Silurian and Lower Devonian deposits of the southwestern part of the field named after Roman Trebs

open access: yesGeoresursy, 2018
A conodont sequence from the Przhidolian stage of the Upper Silurian and almost the entire Lokhkovian stage of the Lower Devonian has been established in the sections of the Upper Silurian-Lower Devonian on the southwestern part of the field named after ...
Т.М. Mavrinskaya   +2 more
doaj   +1 more source

COMPUTER MODELING OF ECONOMIC PROCESSES USING FRACTAL ANALYSIS METHODS

open access: yesНаука Красноярья, 2022
The development of modern information and analytical technologies opens up new opportunities for economic analysis and forecasting of market situations.
Julia V. Melnikova   +1 more
doaj   +1 more source

Finding an imprint of solar and climatic cycles in tree rings of European beech (Fagus sylvatica L.)

open access: yesJournal of Forest Science, 2021
The present study is focused on European beech (Fagus sylvatica L.) growth in eastern Bohemia in the Broumovské stěny National Nature Reserve, Czech Republic.
Václav Šimůnek   +3 more
doaj   +1 more source

Potential for epidemic take-off from the primary outbreak farm via livestock movements

open access: yesBMC Veterinary Research, 2011
Background We consider the potential for infection to spread in a farm population from the primary outbreak farm via livestock movements prior to disease detection.
Tildesley Michael J   +2 more
doaj   +1 more source

Constructions in Minimalism: A Functional Perspective on Cyclicity

open access: yesFrontiers in Psychology, 2020
This article presents a perspective on syntactic cyclicity in minimalism that is compatible with fundamental ideas in construction–grammar approaches.
Andreas Trotzke, Andreas Trotzke
doaj   +1 more source

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