In computer science, Peter Landin's J operator is a programming construct that post-composes a lambda expression with the continuation to the current lambda-context...

Creation operators and annihilation operators are mathematical operators that have widespread applications in quantum mechanics, notably in the study...

{\begin{aligned}J_{-}J_{+}&=(J_{x}-iJ_{y})(J_{x}+iJ_{y})=J_{x}^{2}+J_{y}^{2}+i[J_{x},J_{y}]=J^{2}-J_{z}^{2}-\hbar J_{z},\\J_{+}J_{-}&=(J_{x}+iJ_{y})(J_{x}-iJ_{y})=J...

In mathematics, a differential operator is an operator defined as a function of the differentiation operator. It is helpful, as a matter of notation first...

In mathematics, an operator is generally a mapping or function that acts on elements of a space to produce elements of another space (possibly and sometimes...

In mathematics, the Laplace operator or Laplacian is a differential operator given by the divergence of the gradient of a scalar function on Euclidean...

differentiation operator D {\displaystyle D} D f ( x ) = d d x f ( x ) , {\displaystyle Df(x)={\frac {d}{dx}}f(x)\,,} and of the integration operator J {\displaystyle...

closed-shell system, J ^ j ( i ) {\displaystyle {\hat {J}}_{j}(i)} is the Coulomb operator, defining the repulsive force between the j-th and i-th electrons...

the J operator and with type inference. Another line of descent from ISWIM is to strip out the imperative features (assignment and the J operator) leaving...

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...

functional analysis and operator theory, the notion of unbounded operator provides an abstract framework for dealing with differential operators, unbounded observables...

also J + J − = J x 2 + J y 2 − i [ J x , J y ] = J x 2 + J y 2 + J z {\displaystyle J_{+}J_{-}=J_{x}^{2}+J_{y}^{2}-i[J_{x},J_{y}]=J_{x}^{2}+J_{y}^{2}+J_{z}}...

In mathematics, Jordan operator algebras are real or complex Jordan algebras with the compatible structure of a Banach space. When the coefficients are...

in the Fock operator. It is defined as: J ^ j ( 1 ) f i ( 1 ) = f i ( 1 ) ∫ | φ j ( 2 ) | 2 1 r 12 d r 2 {\displaystyle {\widehat {J}}_{j}(1)f_{i}(1)=f_{i}(1)\int...

Donut Operator". YouTube. "Mustached Cop Gives Rescued Kitten New Forever Home With His 7 Other Pets". ABC News. Retrieved 2024-06-01. Gross, Daniel J. (June...

In mathematics, a Hilbert–Schmidt operator, named after David Hilbert and Erhard Schmidt, is a bounded operator A : H → H {\displaystyle A\colon H\to...

a Dirac operator is a first-order differential operator that is a formal square root, or half-iterate, of a second-order differential operator such as...

operator. This operator was introduced independently by Richard Feynman and Roy J. Glauber in 1951. The displacement operator is a unitary operator,...

In mathematics, the transfer operator encodes information about an iterated map and is frequently used to study the behavior of dynamical systems, statistical...

In mathematics, a closure operator on a set S is a function cl : P ( S ) → P ( S ) {\displaystyle \operatorname {cl} :{\mathcal {P}}(S)\rightarrow {\mathcal...

In quantum mechanics, the Hamiltonian of a system is an operator corresponding to the total energy of that system, including both kinetic energy and potential...

operator T {\displaystyle T} belongs to an operator ideal J {\displaystyle {\mathcal {J}}} , then for any operators A {\displaystyle A} and B {\displaystyle...

In differential geometry, the Laplace–Beltrami operator is a generalization of the Laplace operator to functions defined on submanifolds in Euclidean space...

In mathematics, a self-adjoint operator on a complex vector space V with inner product ⟨ ⋅ , ⋅ ⟩ {\displaystyle \langle \cdot ,\cdot \rangle } is a linear...

partial differential equations, elliptic operators are differential operators that generalize the Laplace operator. They are defined by the condition that...

In functional analysis, one is interested in extensions of symmetric operators acting on a Hilbert space. Of particular importance is the existence, and...

(PLAAF), but numerous international operators have bought their own J-7s. Outside of China, the largest operator of the J-7 is the Pakistan Air Force. Later...

language), successor to APL J# programming language for the Microsoft .NET Framework J operator, a programming construct J (operating system), an operating...

mechanics, the exchange operator P ^ {\displaystyle {\hat {P}}} , also known as permutation operator, is a quantum mechanical operator that acts on states...

In time series analysis, the lag operator (L) or backshift operator (B) operates on an element of a time series to produce the previous element. For example...