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In the physical theory of diffusion, the Laplace operator arises naturally in the mathematical description of equilibrium. [1] Specifically, if u is the density at equilibrium of some quantity such as a chemical concentration, then the net flux of u through the boundary ∂V (also called S) of any smooth region V is zero, provided there is no source or sink within V: =, where n is the outward ...
The following is a list of current commercial operators of the Boeing 767, and any of its variants.As of 2020, there were 764 Boeing 767 aircraft in service, comprising 68 767-200s, 657 767-300s and 37 767-400ERs, [1] as listed by variant in the following table.
In mathematics, the operator norm measures the "size" of certain linear operators by assigning each a real number called its operator norm. Formally, it is a norm defined on the space of bounded linear operators between two given normed vector spaces .
Since 2010, Emirates is the largest Boeing 777 operator, with 152 aircraft; [17] the carrier began phasing out older −200s, −200ERs and −300s in February 2011, [18]. Other primary operators are United Airlines (96), Qatar Airways (81), Air France (70), American Airlines (67), and Cathay Pacific (65). As of November 2011, 62 airline ...
Operators of the MiG-21 in 2017 ... Finland was the first country outside the Warsaw Pact to buy MiG-21, after Finland had rejected the MiG-19.
In quantum mechanics, energy is defined in terms of the energy operator, acting on the wave function of the system as a consequence of time translation symmetry.
Operator is an American post-grunge band from Los Angeles, California, United States. The name Operator was used for a solo project created by Johnny Strong , an actor and musician, who has appeared in movies such as Black Hawk Down (2001), The Fast and the Furious (2001), Get Carter (2000) and The Glimmer Man (1996).
An operator is a function over a space of physical states onto another space of states. The simplest example of the utility of operators is the study of symmetry (which makes the concept of a group useful in this context).