Results 1 to 10 of about 1,455,811 (291)

On general partial Gaussian sums

open access: yesJournal of Inequalities and Applications, 2016
Let q ≥ 2 $q\geq2$ be a fixed integer, A = A ( q ) ≤ q $A=A(q)\leq q$ , B = B ( q ) ≤ q $B=B(q)\leq q$ , and H = H ( q ) ≤ q $H=H(q)\leq q$ . Define ħ ( A , B , H ) = { a ∈ Z ∣ ( a , q ) = 1 , a b ≡ 1 ( mod q ) , 1 ≤ a ≤ A , 1 ≤ b ≤ B , | a − b | ≤ H } .
Ganglian Ren   +2 more
doaj   +3 more sources

Two-dimensional limit series in ultraspherical Jacobi polynomials and their approximative properties [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021
Let $C[-1,1]$ be the space of functions continuous on the segment $[-1,1]$, $C[-1,1]^2$ be the space of functions continuous on the square $[-1,1]^2$. We denote by $P_n^\alpha(x)$ the ultraspherical Jacobi polynomials.
Guseinov, Ibraghim G.   +1 more
doaj   +1 more source

Scaled Fenwick Trees

open access: yesIEEE Access, 2023
A novel data structure that enables the storage and retrieval of linear array numeric data with logarithmic time complexity updates, range sums, and rescaling is introduced and studied.
Matthew Cushman
doaj   +1 more source

On Partial Sum of Tribonacci Numbers [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2015
We study the sumst(k,r)=∑i=0tTki+rofkstep apart Tribonacci numbers for any1≤r≤k. We prove thatst(k,r)satisfies certain Tribonacci rulest(k,r)=akst-1(k,r)+bkst-2(k,r)+st-3(k,r)+λwith integersak,bk,ck, andλ.
Eunmi Choi, Jiin Jo
openaire   +3 more sources

On the Mean Range of Partial Sums of a Finite Number of Random Variables [PDF]

open access: yesThe Egyptian Statistical Journal, 1974
The problem of determining the mean of the range of partial sums of random variables is important in planning the storage capacity of reservoirs under the assumption of infinite storage capacity. In this paper, new formulae for the mean of the range (and
A.A. Anis, S.M. El-Gayar
doaj   +1 more source

Partially Coherent Direct Sum Channels [PDF]

open access: yesQuantum, 2021
We introduce Partially Coherent Direct Sum (PCDS) quantum channels, as a generalization of the already known Direct Sum quantum channels. We derive necessary and sufficient conditions to identify the subset of those maps which are degradable, and provide a simplified expression for their quantum capacities.
Stefano Chessa, Vittorio Giovannetti
openaire   +6 more sources

On weak laws of large numbers for maximal partial sums of pairwise independent random variables

open access: yesComptes Rendus. Mathématique, 2023
This paper develops Rio’s method [11] to prove the weak law of large numbers for maximal partial sums of pairwise independent random variables. The method allows us to avoid using the Kolmogorov maximal inequality.
Thành, Lê Vǎn
doaj   +1 more source

An exact constant on the estimation of the approximation of classes of periodic functions of two variables by Ceśaro means

open access: yesМатематичні Студії, 2022
In the present work, we study problem related to the approximation of continuous $2\pi$-periodic functions by linear means of their Fourier series. The simplest example of a linear approximation of periodic function is the approximation of this function ...
O. G. Rovenska
doaj   +1 more source

Approximation of analytic functions by repeated de la Vallee Poussin sums [PDF]

open access: yesКомпьютерные исследования и моделирование, 2019
The paper deals with the problems of approximation of periodic functions of high smoothness by arithmetic means of Fourier sums. The simplest and natural example of a linear process of approximation of continuous periodic functions of a real variable is ...
Olga G Rovenska
doaj   +1 more source

Partial Gaussian sums III [PDF]

open access: yesGlasgow Mathematical Journal, 1989
For integers a, N and H > 0 writewhere ϰ denotes a non-principal Dirichlet character modulo the positive integer k and e(y) denotes e2πiy.
openaire   +1 more source

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