Results 61 to 70 of about 120,275 (213)
Odd harmonic numbers exceed 10²⁴ [PDF]
Mathematics of Computation, 2010 A number n > 1 n>1
Graeme L. Cohen, Ronald M. Sorli
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Hypergeometric series and harmonic number identities
Advances in Applied Mathematics, 2005 10 ...
CHU, Wenchang, DEDONNO L.
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Five-level selective harmonic elimination PWM strategies and multicarrier phase-shifted sinusoidal PWM: A comparison [PDF]
, 2005 The multicarrier phase-shifted sinusoidal pulse-width modulation (MPS-SPWM) technique is well-known for its important advantage of offering an increased overall bandwidth as the number of carriers multiplied with their equal frequency directly controls ...
Cossar, C. +3 more
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Effect of Rotor Bar Number on Performance of Five-Phase Induction Machine for Traction [PDF]
, 2018 The paper investigates the effect of the bar number on the performances of a five-phase squirrel-cage induction machine with fractional-slot tooth concentrated winding.
SCUILLER, Franck +9 more
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Evaluating Infinite Series Involving Harmonic Numbers by Integration
MathematicsEight infinite series involving harmonic-like numbers are coherently and systematically reviewed. They are evaluated in closed form exclusively by integration together with calculus and complex analysis. In particular, a mysterious series W is introduced
Chunli Li, Wenchang Chu
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Lerch-harmonic numbers related to Lerch transcendent
Mathematical and Computer Modelling of Dynamical Systems, 2023 Harmonic numbers and generalized harmonic numbers have been studied in connection with combinatorial problems, many expressions involving special functions in analytic number theory and analysis of algorithms.
Taekyun Kim +3 more
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Differences of Harmonic Numbers and the abc-Conjecture
The PUMP Journal of Undergraduate Research, 2018 Our main source of inspiration was a talk by Hendrik Lenstra on harmonic numbers, which are numbers whose only prime factors are two or three. Gersonides proved 675 years ago that one can be written as a difference of harmonic numbers in only four ways: 2-1, 3-2, 4-3, and 9-8.
da Silva, Natalia +2 more
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Reducing Harmonic Voltage At Industrial Area Distribution Network Using Network Configuration Management [TK1007. S526 2008 f rb]. [PDF]
, 2008 Syarikat pembekal elektrik diperlukan untuk mengekalkan tahap voltan harmonik di dalam sistem di bawah batas piawaian. Electric utility company is required to maintain harmonic voltage level in the system below the standard’s ...
Latif, Mohd Shahed
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Riordan arrays and harmonic number identities [PDF]
, 2010 Let the numbers P(r,n,k) be defined by P(r,n,k):=Pr(Hn(1)−Hk(1),…,Hn(r)−Hk(r)), where Pr(x1,…,xr)=(−1)rYr(−0!x1,−1!x2,…,−(r−1)!xr) and Yr are the exponential complete Bell polynomials.
Wang, Weiping, Weiping Wang
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