The J-integral represents a way to calculate the strain energy release rate, or work (energy) per unit fracture surface area, in a material. The theoretical...
18 KB (1,969 words) - 23:48, 31 July 2024
In mathematics, an integral is the continuous analog of a sum, which is used to calculate areas, volumes, and their generalizations. Integration, the process...
69 KB (9,283 words) - 04:47, 31 December 2024
calculated using the J-integral, i.e. G = J {\displaystyle G=J} , using J = ∫ Γ ( W n 1 − t i ∂ u i ∂ x 1 ) d Γ , {\displaystyle J=\int _{\Gamma }\left(Wn_{1}-t_{i}\...
39 KB (5,612 words) - 15:59, 14 November 2024
In politics, integralism, integrationism or integrism (French: intégrisme) is an interpretation of Catholic social teaching that argues the principle...
30 KB (3,145 words) - 01:32, 3 December 2024
The Gaussian integral, also known as the Euler–Poisson integral, is the integral of the Gaussian function f ( x ) = e − x 2 {\displaystyle f(x)=e^{-x^{2}}}...
20 KB (4,300 words) - 04:56, 19 October 2024
Fracture mechanics (section J-integral)
elastic-plastic fracture mechanics can be used with parameters such as the J-integral or the crack tip opening displacement. The characterising parameter describes...
40 KB (5,897 words) - 03:12, 5 November 2024
Henstock–Kurzweil integral or generalized Riemann integral or gauge integral – also known as the (narrow) Denjoy integral (pronounced [dɑ̃ʒwa]), Luzin integral or Perron...
18 KB (2,872 words) - 19:10, 29 September 2024
as real analysis, the Riemann integral, created by Bernhard Riemann, was the first rigorous definition of the integral of a function on an interval. It...
42 KB (5,473 words) - 14:34, 16 December 2024
Itô calculus (redirect from Itô integral)
central concept is the Itô stochastic integral, a stochastic generalization of the Riemann–Stieltjes integral in analysis. The integrands and the integrators...
30 KB (4,486 words) - 16:45, 26 November 2024
Integral theory as developed by Ken Wilber is a synthetic metatheory aiming to unify a broad spectrum of Western theories and models and Eastern meditative...
74 KB (7,420 words) - 05:18, 25 November 2024
The path integral formulation is a description in quantum mechanics that generalizes the stationary action principle of classical mechanics. It replaces...
86 KB (14,278 words) - 03:27, 4 December 2024
mathematics, integral equations are equations in which an unknown function appears under an integral sign. In mathematical notation, integral equations may...
32 KB (5,600 words) - 03:13, 24 December 2024
The INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) is a space telescope for observing gamma rays of energies up to 8 MeV. It was launched by...
19 KB (1,894 words) - 16:08, 22 November 2024
Integration is the basic operation in integral calculus. While differentiation has straightforward rules by which the derivative of a complicated function...
29 KB (5,611 words) - 21:09, 30 January 2024
mathematics, the exponential integral Ei is a special function on the complex plane. It is defined as one particular definite integral of the ratio between an...
18 KB (2,995 words) - 07:42, 24 September 2024
The Fresnel integrals S(x) and C(x) are two transcendental functions named after Augustin-Jean Fresnel that are used in optics and are closely related...
22 KB (2,715 words) - 11:32, 12 November 2024
mathematics, an integral domain is a nonzero commutative ring in which the product of any two nonzero elements is nonzero. Integral domains are generalizations...
20 KB (3,124 words) - 12:49, 4 October 2024
Fracture of soft materials (section J-integral)
the J-integral for plane stress and plane strain in Mode I are the same: J = μ π a 2 4 . {\displaystyle J={\frac {\mu \pi a^{2}}{4}}.} The J-integral can...
14 KB (2,415 words) - 16:30, 4 October 2024
the stress intensity factor K {\displaystyle K} and the elastic-plastic J-integral. For plane stress conditions, the CTOD can be written as: δ t = ( 8 σ...
7 KB (1,140 words) - 18:49, 7 October 2024
In mathematics, the integral of a non-negative function of a single variable can be regarded, in the simplest case, as the area between the graph of that...
41 KB (5,888 words) - 12:44, 23 December 2024
In mathematics, an abelian integral, named after the Norwegian mathematician Niels Henrik Abel, is an integral in the complex plane of the form ∫ z 0...
6 KB (848 words) - 21:37, 15 March 2022
In integral calculus, an elliptic integral is one of a number of related functions defined as the value of certain integrals, which were first studied...
40 KB (7,832 words) - 21:38, 15 October 2024
In mathematics, an integral transform is a type of transform that maps a function from its original function space into another function space via integration...
13 KB (1,278 words) - 17:01, 18 November 2024
mathematics, trigonometric integrals are a family of nonelementary integrals involving trigonometric functions. The different sine integral definitions are Si...
17 KB (3,230 words) - 23:53, 28 December 2024
said to be integral over a subring A of B if b is a root of some monic polynomial over A. If A, B are fields, then the notions of "integral over" and of...
32 KB (5,304 words) - 00:33, 29 November 2024
In mathematics, the logarithmic integral function or integral logarithm li(x) is a special function. It is relevant in problems of physics and has number...
6 KB (1,104 words) - 21:51, 7 August 2024
Riemann–Stieltjes integral is a generalization of the Riemann integral, named after Bernhard Riemann and Thomas Joannes Stieltjes. The definition of this integral was...
19 KB (2,825 words) - 15:35, 4 November 2024
Polylogarithm (redirect from Arctangent integral)
closed form of integrals of the Fermi–Dirac distribution and the Bose–Einstein distribution, and is also known as the Fermi–Dirac integral or the Bose–Einstein...
60 KB (10,165 words) - 14:52, 17 June 2024
In mathematics, the Fredholm integral equation is an integral equation whose solution gives rise to Fredholm theory, the study of Fredholm kernels and...
8 KB (1,048 words) - 18:22, 12 December 2024
An integral, or intrinsic, membrane protein (IMP) is a type of membrane protein that is permanently attached to the biological membrane. All transmembrane...
11 KB (1,138 words) - 13:09, 9 December 2024