functional operator - translation to ρωσικά
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functional operator - translation to ρωσικά

CONCEPT IN CALCULUS OF VARIATION
Functional derivative(physics); Variational derivative; Functional deferentiation; Functional derivative operator

functional operator      

математика

функциональный оператор

bounded operator         
LINEAR TRANSFORMATION L BETWEEN NORMED VECTOR SPACES X AND Y FOR WHICH THE RATIO OF THE NORM OF L(V) TO THAT OF V IS BOUNDED BY THE SAME NUMBER, OVER ALL NON-ZERO VECTORS V IN X
Bounded linear map; Bounded linear operator; Continuous operator; Bounded linear function; Bounded operators; Bounded linear functional; Bounded linear transform; Bounded Linear Form; Bonded linear operator

математика

ограниченный оператор

continuous operator         
LINEAR TRANSFORMATION L BETWEEN NORMED VECTOR SPACES X AND Y FOR WHICH THE RATIO OF THE NORM OF L(V) TO THAT OF V IS BOUNDED BY THE SAME NUMBER, OVER ALL NON-ZERO VECTORS V IN X
Bounded linear map; Bounded linear operator; Continuous operator; Bounded linear function; Bounded operators; Bounded linear functional; Bounded linear transform; Bounded Linear Form; Bonded linear operator

математика

непрерывный оператор

Ορισμός

Del

Βικιπαίδεια

Functional derivative

In the calculus of variations, a field of mathematical analysis, the functional derivative (or variational derivative) relates a change in a functional (a functional in this sense is a function that acts on functions) to a change in a function on which the functional depends.

In the calculus of variations, functionals are usually expressed in terms of an integral of functions, their arguments, and their derivatives. In an integral L of a functional, if a function f is varied by adding to it another function δf that is arbitrarily small, and the resulting integrand is expanded in powers of δf, the coefficient of δf in the first order term is called the functional derivative.

For example, consider the functional

where f ′(x) ≡ df/dx. If f is varied by adding to it a function δf, and the resulting integrand L(x, f +δf, f '+δf ′) is expanded in powers of δf, then the change in the value of J to first order in δf can be expressed as follows: where the variation in the derivative, δf was rewritten as the derivative of the variation (δf) ′, and integration by parts was used.
Μετάφραση του &#39functional operator&#39 σε Ρωσικά