Results 21 to 30 of about 143,397 (296)
The structure of maximal zero-sum free sequences [PDF]
Acta Arithmetica, 2010 Let n be an integer, and consider finite sequences of elements of the group Z/nZ x Z/nZ. Such a sequence is called zero-sum free, if no subsequence has sum zero. It is known that the maximal length of such a zero-sum free sequence is 2n-2, and Gao and Geroldinger conjectured that every zero-sum free sequence of this length contains an element with ...
Bhowmik, Gautami +2 more
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IET Generation, Transmission & Distribution, 2021 Neutral non‐effectively grounded mode is widely used in medium‐voltage distribution networks in China. When a single‐phase grounding fault occurs in distribution networks, abundant transient signals will be generated.
Wenhao Wu +4 more
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A line selection method of mine leakage protectio
Gong-kuang zidonghua, 2020 Aiming at problem of low accuracy of line selection when single-phase grounding fault occurs in mine power supply system at present, according to characteristics of obvious difference of zero-sequence current waveform between fault line and non-fault ...
YU Qun, SHANG Xueli
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Robust Video Watermarking Scheme Based on QDCT Global Equalization Strategy [PDF]
Jisuanji kexue, 2023 As a promising technology of copyright protection,video watermarking has attracted more and more attention in recent years.Different from the original domain scheme,the compressed domain scheme does not need to fully encode and decode video,so it has ...
TAO Xinyu, XIONG Lizhi, ZHANG Xiang
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On Subsequence Sums of a Zero-sum Free Sequence II [PDF]
The Electronic Journal of Combinatorics, 2008 Let $G$ be an additive finite abelian group with exponent $\exp (G) = n$. For a sequence $S$ over $G$, let f$(S)$ denote the number of non-zero group elements which can be expressed as a sum of a nontrivial subsequence of $S$. We show that for every zero-sum free sequence $S$ over $G$ of length $|S| = n+1$ we have f$(S) \ge 3n-1$.
Weidong Gao 0001 +3 more
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The zero-sum constant, the Davenport constant and their analogues
Technical Transactions, 2020 Let D(G) be the Davenport constant of a finite Abelian group G. For a positive integer m (the case m = 1, is the classical case) let Em(G) (or ηm(G)) be the least positive integer t such that every sequence of length t in G contains m disjoint zero-sum ...
Zakarczemny Maciej
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On weighted zero-sum sequences
Advances in Applied Mathematics, 2012 24 pages. Accepted version for publication in Adv.
Sukumar Das Adhikari +2 more
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REGULAR GROWTH OF DIRICHLET SERIES OF THE CLASS 𝐷(Φ) ON CURVES OF BOUNDED 𝐾-SLOPE
Проблемы анализа, 2023 We study the asymptotic behavior of the sum of en- tire Dirichlet series with positive exponents on curves of a bounded slope going in a certain way to infinity.
N. N. Aitkuzhina +2 more
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On Bialostocki's conjecture for zero-sum sequences [PDF]
Acta Arithmetica, 2009 Let $n$ be a positive even integer, and let $a_1,...,a_n$ and $w_1, ..., w_n$ be integers satisfying $\sum_{k=1}^n a_k\equiv\sum_{k=1}^n w_k =0 (mod n)$. A conjecture of Bialostocki states that there is a permutation $σ$ on {1,...,n} such that $\sum_{k=1}^n w_k a_{σ(k)}=0 (mod n)$.
Guo, Song, Sun, Zhi-Wei
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МULTIFREQUENCY PROTECTING METHOD AGAINST EARTH-FAULTS OF PHASE IN THE COMPENSATED ELECTRIC NETWORKS
Electrical engineering & Electromechanics, 2020 Introduction. A significant proportion of earth faults in 6 - 35 kV networks is a transient and short-lived process, which is followed by an electric arc. Problem. In such cases, earth-fault protection that responds to steady-state current and voltage is
V. F. Syvokobylenko, V. A. Lysenko
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