Results 31 to 40 of about 394,491 (124)

Analytical approximation of the definite Chapman integral for arbitrary zenith angles [PDF]

open access: yesAtmospheric Chemistry and Physics
This study presents an analytical approximation of the definite Chapman integral, applicable to any zenith angle and finite integration limits. The author also presents the asymptotic expression for the definite Chapman integral, which enables an ...
D. Yue
doaj   +1 more source

Averages of Fourier coefficients of Siegel modular forms and representation of binary quadratic forms by quadratic forms in four variables

open access: yes, 2016
Let $-d$ be a a negative discriminant and let $T$ vary over a set of representatives of the integral equivalence classes of integral binary quadratic forms of discriminant $-d$.
A Earnest   +24 more
core   +1 more source

On the representation of integers by quadratic forms

open access: yes, 2006
Let Q be a non-singular quadratic form with integer coefficients. When Q is indefinite we provide new upper bounds for the least non-trivial integral solution to the equation Q=0. When Q is positive definite we provide improved upper bounds for the least
Browning, T. D., Dietmann, R.
core   +1 more source

Students critical thinking skills toward concepts differences in finding area of a plane region and definite integral

open access: yesUnnes Journal of Mathematics Education, 2019
This study aimed to describe students' critical thinking skills towards the concepts differences in finding the area of a plane region and definite integral. This study used an exploratory test survey method with test instruments. Data were taken from 40
Bambang Eko Susilo   +2 more
doaj   +1 more source

Error estimation for n-th order Filon quadrature formula

open access: yesLietuvos Matematikos Rinkinys, 2023
In this paper the error estimation for n-th order Filon quadrature formula is discussed.
Kostas Plukas, Danutė Plukienė
doaj   +1 more source

Definite Integral of Logarithmic Functions in Terms of the Incomplete Gamma Function

open access: yesMathematics, 2021
In this article we derive some entries and errata for the book of Gradshteyn and Ryzhik which were originally published by Bierens de Haan. We summarize our results using tables for easy reading and referencing.
Robert Reynolds, Allan Stauffer
doaj   +1 more source

Non-positivity of the Wigner function and bounds on associated integrals

open access: yes, 2003
The Wigner function shares several properties with classical distribution functions on phase space, but is not positive-definite. The integral of the Wigner function over a given region of phase space can therefore lie outside the interval [0,1].
Bracken, A. J., Ellinas, D., Wood, J. G.
core   +1 more source

Casimir force in the presence of a magnetodielectric medium

open access: yes, 2010
In this article we investigate the Casimir effect in the presence of a medium by quantizing the Electromagnetic (EM) field in the presence of a magnetodielectric medium by using the path integral formalism.
Fardin Kheirandish   +7 more
core   +1 more source

Encapsulation of the defined integral mathematical object of university students: a view from APOS theory

open access: yesCogent Education
Understanding the concept of definite integrals is a persistent challenge in university mathematics education, largely attributable to traditional teaching practices that prioritise mechanical procedures over conceptual depth.
Luis Adriano Romero Osorio   +2 more
doaj   +1 more source

Approach to the Formulation of the Variable Change Theorem

open access: yesEducation Sciences, 2021
This research proposes a didactic strategy to enrich the assimilation processes of the change of variable theorem in solving the definite integral.
Armando Morales Carballo   +3 more
doaj   +1 more source

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