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Adjoint equation information


An adjoint equation is a linear differential equation, usually derived from its primal equation using integration by parts. Gradient values with respect to a particular quantity of interest can be efficiently calculated by solving the adjoint equation. Methods based on solution of adjoint equations are used in wing shape optimization, fluid flow control and uncertainty quantification.

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Adjoint equation

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An adjoint equation is a linear differential equation, usually derived from its primal equation using integration by parts. Gradient values with respect...

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Adjoint

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matrix, related to its inverse Adjoint equation The upper and lower adjoints of a Galois connection in order theory The adjoint of a differential operator...

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Adjoint state method

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in neural networks. The adjoint state space is chosen to simplify the physical interpretation of equation constraints. Adjoint state techniques allow the...

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Costate equation

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costate equation is related to the state equation used in optimal control. It is also referred to as auxiliary, adjoint, influence, or multiplier equation. It...

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Dirac equation

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^{\mu }\gamma ^{0},} one can derive the adjoint Dirac equation by taking the Hermitian conjugate of the Dirac equation and multiplying on the right by γ 0...

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Adjoint functors

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this relationship are known as adjoint functors, one being the left adjoint and the other the right adjoint. Pairs of adjoint functors are ubiquitous in mathematics...

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Hermitian adjoint

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{\displaystyle A} on an inner product space defines a Hermitian adjoint (or adjoint) operator A ∗ {\displaystyle A^{*}} on that space according to the...

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Dirac adjoint

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In quantum field theory, the Dirac adjoint defines the dual operation of a Dirac spinor. The Dirac adjoint is motivated by the need to form well-behaved...

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Conjugate transpose

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names for the conjugate transpose of a matrix are Hermitian conjugate, adjoint matrix or transjugate. The conjugate transpose of a matrix A {\displaystyle...

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Heat equation

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mathematics and physics, the heat equation is a certain partial differential equation. Solutions of the heat equation are sometimes known as caloric functions...

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Differential operator

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self-adjoint operator is an operator equal to its own (formal) adjoint. If Ω is a domain in Rn, and P a differential operator on Ω, then the adjoint of...

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Glossary of mechanical engineering

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can be efficiently calculated by solving the adjoint equation. Methods based on solution of adjoint equations are used in wing shape optimization, fluid...

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Bogomolny equations

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corresponding adjoint bundle, d A {\displaystyle d_{A}} is the exterior covariant derivative induced by A {\displaystyle A} on the adjoint bundle, and ⋆...

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Adjugate matrix

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known as adjunct matrix, or "adjoint", though the latter term today normally refers to a different concept, the adjoint operator which for a matrix is...

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Density matrix

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identity matrix provide a basis for 2 × 2 {\displaystyle 2\times 2} self-adjoint matrices:: 126  ρ = 1 2 ( I + r x σ x + r y σ y + r z σ z ) , {\displaystyle...

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Separation of variables

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differential equations, in which algebra allows one to rewrite an equation so that each of two variables occurs on a different side of the equation. A differential...

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Bessel function

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when working with Fourier transforms. Because Bessel's equation becomes Hermitian (self-adjoint) if it is divided by x, the solutions must satisfy an orthogonality...

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Laplace operator

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side of this equation is the Laplace operator, and the entire equation Δu = 0 is known as Laplace's equation. Solutions of the Laplace equation, i.e. functions...

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Multidisciplinary design optimization

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in that case the techniques of linear programming are applicable. Adjoint equation Newton's method Steepest descent Conjugate gradient Sequential quadratic...

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