Results 21 to 30 of about 102,666 (260)
Fourier Quasicrystals with Unit Masses
Comptes Rendus. Mathématique, 2021 The sum of $\delta $-measures sitting at the points of a discrete set $\Lambda \subset \mathbb{R}$ forms a Fourier quasicrystal if and only if $\Lambda $ is the zero set of an exponential polynomial with imaginary frequencies.
Olevskii, Alexander +1 more
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Problem of modelling a layered medium taking into account the creep of its materials
MATEC Web of Conferences, 2018 Problems for heterogeneous materials arise in many areas of construction. This article deals with elastic-creeping layered composite materials. Relations of the theory of linear heredity of Boltzmann-Volterra are accepted.
Bobyleva Tatiana, Shamaev Alexei
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PLoS ONE, 2016 BackgroundSeveral studies have shown that total depressive symptom scores in the general population approximate an exponential pattern, except for the lower end of the distribution.
Shinichiro Tomitaka +6 more
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The exponential distribution as the sum of discontinuous distributions [PDF]
Bulletin of Computational Applied Mathematics, 2013 We show that for any natural number $n$, an exponential distribution can be written as the sum of $n$ discontinuous variables and another exponential distribution, all of them independent.
José Luis Palacios
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Algebraic degrees of a class of exponential sums
四川大学学报. 自然科学版, 2020 Recently Wan studied the algebraic degrees of the exponential sums S_q(f) over a finite field F_q. In this article, basing on Wan's results, we discuss the Gauss sums for the case q=p^2 and obtain that S_q(x^d) has only two possible values, if it is of ...
Chen Chao, PENG Guo-Hua
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Level Sets Guided by SoDEF-Fitting Energy for River Channel Detection in SAR Images
Remote Sensing, 2023 To achieve river channel detection in SAR (synthetic aperture radar) images, we developed a level-set-based model (LSBM) guided by a designed data-fitting energy which is called the SoDEF (sum of dual exponential functions)-fitting energy.
Bin Han, Anup Basu
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SINGULAR POINTS FOR THE SUM OF A SERIES OF EXPONENTIAL MONOMIALS
Проблемы анализа, 2018 A problem of distribution of singular points for sums of series of exponential monomials on the boundary of its convergence domain is studied. The influence of a multiple sequence Λ = {λk, nk}_(∞;k=1) of the series in the presence of singular points on ...
Krivosheeva O . A . +1 more
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Picturesque exponential sums. II:
Journal für die reine und angewandte Mathematik (Crelles Journal), 1979 Let k be a fixed positive integer ⩾2 and let ζ = exp(2πi/k). For any integer n ⩾0 we define b(n) to be the sum of the digits of n when written to the base k.
Lehmer, D.H., Lehmer, Emma
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FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
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