Results 11 to 20 of about 783,373 (136)

On the bivariate Padovan polynomials matrix [PDF]

Notes on Number Theory and Discrete Mathematics, 2023
In this paper, we intruduce the bivariate Padovan sequence we examine its various identities. We define the bivariate Padovan polynomials matrix. Then, we find the Binet formula, generating function and exponential generating function of the bivariate ...
Orhan Dişkaya, Hamza Menken, Paula Maria Machado Cruz Catarino   +2 more
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The exponential sum over squarefree integers [PDF]

, 2004
We give an upper bound for the exponential sum over squarefree integers.
Schlage-Puchta, Jan-Christoph
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Extended Wang sum and associated products.

PLoS ONE, 2022
The Wang sum involving the exponential sums of Lerch's Zeta functions is extended to the finite sum of the Huwitz-Lerch Zeta function to derive sums and products involving cosine and tangent trigonometric functions.
Robert Reynolds, Allan Stauffer
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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, Ulanovskii, Alexander   +1 more
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Efficient spectral estimation by MUSIC and ESPRIT with application to sparse FFT

Frontiers in Applied Mathematics and Statistics, 2016
In spectral estimation, one has to determine all parameters of an exponential sum for finitely many (noisy)sampled data of this exponential sum.Frequently used methods for spectral estimation are MUSIC (MUltiple SIgnal Classification) and ESPRIT ...
Daniel ePotts, Manfred eTasche, Toni eVolkmer   +2 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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Relationship between Item Responses of Negative Affect Items and the Distribution of the Sum of the Item Scores in the General Population.

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, Yohei Kawasaki, Kazuki Ide, Maiko Akutagawa, Hiroshi Yamada, Toshiaki A Furukawa, Yutaka Ono   +6 more
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Deterministic Identity Testing for Sum of Read-Once Oblivious Arithmetic Branching Programs [PDF]

, 2015
A read-once oblivious arithmetic branching program (ROABP) is an arithmetic branching program (ABP) where each variable occurs in at most one layer. We give the first polynomial time whitebox identity test for a polynomial computed by a sum of constantly
Gurjar, Rohit, Korwar, Arpita, Saxena, Nitin, Thierauf, Thomas   +3 more
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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
doaj   +1 more source

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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