Results 1 to 10 of about 17,495 (203)

Convergent expansions and bounds for the incomplete elliptic integral of the second kind near the logarithmic singularity [PDF]

open access: yesMathematics of Computation, 2022
We find two series expansions for Legendre's second incomplete elliptic integral $E(\lambda, k)$ in terms of recursively computed elementary functions. Both expansions converge at every point of the unit square in the $(\lambda, k)$ plane.
D. Karp, Yi Zhang
semanticscholar   +1 more source

Improving estimates for discrete polynomial averages [PDF]

open access: yes, 2020
For a polynomial $P$ mapping the integers into the integers, define an averaging operator $A_{N} f(x):=\frac{1}{N}\sum_{k=1}^N f(x+P(k))$ acting on functions on the integers.
Han, Rui   +4 more
core   +3 more sources

Basic Hypergeometric Functions as Limits of Elliptic Hypergeometric Functions [PDF]

open access: yes, 2009
We describe a uniform way of obtaining basic hypergeometric functions as limits of the elliptic beta integral. This description gives rise to the construction of a polytope with a different basic hypergeometric function attached to each face of this ...
Rains, Eric M., van de Bult, Fokko J.
core   +5 more sources

On the Fourier transform of functions from a Lorentz space L_2,r with a mixed metric

open access: yesBULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS, 2023
The classical inequalities of Bochkarev play a very important role in harmonic analysis. The meaning of these inequalities lies in the connection between the metric characteristics of functions and the summability of their Fourier coefficients.
N. Tleukhanova   +2 more
semanticscholar   +1 more source

MYMathApps Calculus: Maple Plots

open access: yesMaple Transactions, 2022
I am writing an online Calculus text called MYMathApps Calculus. You can see a sample at           https://mymathapps.com/mymacalc-sample/The text is highly interactive and visual.
Philip Yasskin
semanticscholar   +1 more source

Tail probability and divergent series [PDF]

open access: yes, 2020
From mostly a measure-theoretic consideration, we show that for every nonnegative, finite, and L1 function on a given finite measure space there is some nontrivial sequence of real numbers such that the series, obtained from summing over the term-by-term
Yu-Lin Chou
semanticscholar   +1 more source

Riemann sums over polytopes [PDF]

open access: yes, 2006
We show that the Euler-MacLaurin formula for Riemann sums has an n-dimensional analogue in which intervals on the line get replaced by convex polytopes.Comment: 13 ...
Guillemin, Victor, Sternberg, Shlomo
core   +3 more sources

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

open access: yesMatematychni Studii, 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. Rovenska
semanticscholar   +1 more source

Thirty-two Goldbach Variations

open access: yes, 2005
We give thirty-two diverse proofs of a small mathematical gem--the fundamental Euler sum identity zeta(2,1)=zeta(3) =8zeta(\bar 2,1). We also discuss various generalizations for multiple harmonic (Euler) sums and some of their many connections, thereby ...
Abramowitz M.   +30 more
core   +1 more source

On Hilbert type inequalities

open access: yesJournal of Inequalities and Applications, 2012
In the present paper we establish new inequalities similar to the extensions of Hilbert’s double-series inequality and also give their integral analogues. Our results provide some new estimates to these types of inequalities.MSC:26D15.
Chang-Jian Zhao, W. Cheung
semanticscholar   +2 more sources

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