Results 11 to 20 of about 2,035,459 (284)

Complex zero decreasing sequences [PDF]

open access: yesMethods and Applications of Analysis, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Craven, Thomas, Csordas, George
openaire   +1 more source

Zeros of recurrence sequences [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1991
We give an upper bound for the number of zeros of recurrence sequences defined over an algebraic number field in terms of their order, the degree of their field of definition and the number of prime ideal divisors of the characteristic roots of the sequence.
van der Poorten, A. J.   +1 more
openaire   +2 more sources

Research on Fault-Tolerant Operation Strategy of Permanent Magnet Synchronous Motor with Common DC Bus Open Winding Phase-Breaking Fault

open access: yesEnergies, 2022
In some key areas, fault-tolerant control is usually needed in order to enable the motor to operate continuously in fault mode. Given that it is difficult to detect the zero-sequence current of the open winding permanent magnet synchronous motor after ...
Kangfei Lv, Xinwei Dong, Cong Zhu
doaj   +1 more source

The structure of maximal zero-sum free Sequences [PDF]

open access: yes, 2008
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.
Bhowmik, Gautami   +2 more
core   +3 more sources

Inductive Methods and Zero-Sum Free Sequences [PDF]

open access: yesIntegers, 2009
AbstractA fairly long-standing conjecture is that the Davenport constant of a groupWe also prove the conjecture for groups of the form ...
Bhowmik, Gautami   +2 more
openaire   +4 more sources

SOME CONNECTIONS BETWEEN THE SMARANDACHE FUNCTION AND THE FIBONACCI SEQUENCE [PDF]

open access: yes, 2013
This paper is aimed to provide generalizations of the Smarandache function. They will be constructed by means of sequences more general than the sequence of the factorials.
Dunutrescu, C., Rocsoreanu, C.
core   +1 more source

Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation [PDF]

open access: yes, 2014
An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions.
FLIELLER, Damien   +3 more
core   +5 more sources

THE DEVELOPMENT OF THE THEORY OF INSTANTANEOUS POWER OF THREE-PHASE NETWORK IN TERMS OF NETWORK CENTRISM

open access: yesElectrical engineering & Electromechanics, 2017
Purpose. Information technologies allow multidimensional analysis of information about the state of the power system in a single information space in terms of providing network-centric approach to control and use of unmanned aerial vehicles as tools for ...
Ye. I. Sokol   +5 more
doaj   +1 more source

IEC 61850-Based Centralized Protection against Single Line-To-Ground Faults in Ungrounded Distribution Systems

open access: yesEnergies, 2021
We developed an International Electrotechnical Commission (IEC) 61850-based centralized protection scheme to prevent single line-to-ground (SLG) faults in the feeders and busbars of ungrounded distribution systems.
Soon-Ryul Nam   +4 more
doaj   +1 more source

The spectral gap of graphs and Steklov eigenvalues on surfaces [PDF]

open access: yes, 2013
Using expander graphs, we construct a sequence of smooth compact surfaces with boundary of perimeter N, and with the first non-zero Steklov eigenvalue uniformly bounded away from zero. This answers a question which was raised in [9].
Colbois, Bruno, Girouard, Alexandre
core   +1 more source

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