Real functions Functions of several real variables Concept
Gradient
Builds on Partial derivativeDifferentiable function of several variables
Summary
Let be a differentiable real-valued function on an open subset of . Its gradient at a point is the vector of its partial derivatives at . It points in the direction in which increases fastest, and its length is that fastest rate of increase. The derivative of at is the dot product with the gradient: .
Reading path
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- Euclidean space object
- Function concept
- Total derivative concept
- Function of several variables concept
- Differentiable function of several variables concept
- Partial derivative concept
- Gradient concept
Where this leads
191 pages build on this one.
- Mean value theorem in several variables
- Lagrange multiplier with one constraint
- Poincaré lemma for one-forms on convex sets
- Chain rule for a composition with a curve
- Stokes' theorem
- Path independence of line integrals
- Harmonic function
- Laplacian
- Curl-free field that is not conservative
- Del operator
- Scalar potential
- Generalised Stokes theorem
- Vector calculus identities
- Saddle point
- Conservative vector field
- Gradient theorem
- Gradient is orthogonal to level sets
- Homotopy invariance of line integrals of closed forms
- Liouville's equation
- Conformal invariance of harmonic functions
- Shell theorem
- Green's function for the Laplacian
- Phragmén–Lindelöf principle for subharmonic functions
- Harmonic functions on Riemannian manifolds
- Weyl's law
- Pluriharmonic function
- Quaternionic analysis
- Cheng–Yau gradient estimate
- Removable singularities for harmonic functions
- Minimum principle for harmonic functions
- Minimal surface equation
- Hamiltonian Monte Carlo
- Superharmonic function
- Schrödinger equation
- Hamilton–Jacobi equation
- Zaremba's punctured ball
- Harmonic at a point
- Newtonian potential
- Nonlinear Schrödinger equation
- Stokes flow
- Krylov–Safonov estimate
- Neumann problem
- Schwarz integral formula
- Yamabe problem
- Harmonic majorant
- Harnack inequality for parabolic equations
- Reaction–diffusion system
- KdV equation as an integrable system
- Log-modulus of a holomorphic function is subharmonic
- Single layer potential
- Gradient flow on a manifold
- Mutual absolute continuity of harmonic measures
- Lusin area integral
- Dirichlet problem
- Positive harmonic function
- Weyl's lemma
- Ginzburg–Landau equation
- Cahn–Hilliard equation
- Harmonic function on a ball
- Brelot space
- Maximum principle for subharmonic functions
- Fundamental solution of the Laplacian
- Herglotz representation theorem
- Euler equations
- Poisson–Jensen formula
- Subharmonic function
- Poisson's equation
- Newtonian kernel
- Porous medium equation
- Smoothness and analyticity of harmonic functions
- Spectral geometry
- Gaussian free field
- Sub-mean value property
- Riesz decomposition theorem
- Kakutani's solution of the Dirichlet problem
- Clifford analysis
- Keller–Segel model
- Boundary integral equation for the Neumann problem
- Converse of the mean value property
- Gross–Pitaevskii equation
- Local existence of harmonic conjugates
- Brenier's theorem
- Polyharmonic spline
- Boundary integral method for the Dirichlet problem
- Earnshaw's theorem
- Five-point stencil
- p-Laplacian
- Logarithmic kernel
- Spherical harmonics
- Dirichlet-to-Neumann operator
- Plateau's problem
- Darcy's law
- Convex functions of subharmonic functions
- Harmonic measure
- Superharmonic potential
- Resolutivity of boundary functions
- Lamé equations of elasticity
- Pólya's conjecture on Laplacian eigenvalues
- Minimal harmonic function
- Riesz measure of a subharmonic function
- Martin kernel
- Klein–Gordon equation
- Calderón projector
- Fractional Laplacian
- Obstacle problem
- Geometric optics
- Energy method
- Schiffer's conjecture
- Double layer potential
- Jump relations for layer potentials
- Discrete harmonic function
- Stefan problem as a variational inequality
- Fischer decomposition
- Navier–Stokes equations
- Douglas–Radó solution of Plateau's problem
- Koebe's theorem on the mean value property
- Area-minimizing current
- Turing pattern
- Level-set method
- Bessel potential
- Perron method
- Compactness of families of harmonic functions
- Polyharmonic function
- Boltzmann equation
- Gradient estimates for harmonic functions
- p-harmonic function
- Kelvin transform
- Harnack's principle
- Poisson integral formula
- Displacement convexity
- Littlewood subordination theorem
- Biharmonic equation
- Dahlberg's theorem on harmonic measure
- Boundary Harnack principle
- Green's identities
- Least harmonic majorant
- Liouville's theorem for harmonic functions
- Removable sets for bounded harmonic functions
- Transport equation
- Calderón problem
- Dirichlet's principle
- Harmonic functions on Riemann surfaces
- Calderón–Zygmund estimates
- Mean-field game
- Hardy spaces of harmonic functions
- Wave equation
- Herglotz–Riesz kernel
- Martin boundary
- Laplace's equation
- Caloric function
- Liouville's theorem for planar harmonic functions
- Gauss's law for potentials
- Green's function of the ball
- Maximum principle for harmonic functions
- Steklov eigenvalue problem
- Differential game
- Hadamard three-circle theorem for subharmonic functions
- Lindelöf's maximum principle
- Condenser capacity
- Heat equation
- Helmholtz equation
- Poisson kernel
- Schrödinger operator
- Differential dynamic programming
- Harmonic measure as exit distribution
- Bateman transform
- Envelope theorem
- Method of steepest descent
- Parabolic and hyperbolic Riemann surfaces
- Poisson integral for the half-space
- Hearing the shape of a drum
- Eikonal equation
- Adjoint state method
- Logarithmic potential
- Harmonic space
- Harmonic polynomial
- Hadamard's two-constants theorem
- Schwarz reflection principle for harmonic functions
- Method of fundamental solutions
- Bôcher's theorem
- Vlasov equation
- Dirichlet eigenvalue
- Harnack's inequality
- Free boundary problem
- Expansion in spherical harmonics
- Monogenic function
- Allen–Cahn equation
- Hartogs lemma for subharmonic functions
- Dirac operator
- Boundary integral equation for the Dirichlet problem
- Lane–Emden equation
Further reading
- Web https://en.wikipedia.org/wiki/Gradient, lead section
About this page
| Tag | 0ABK9V9Y64 |
|---|---|
| URI | m2://0ABK9V9Y64 |
| Aliases | gradient-vector, grad |
| Kind | concept |
| Writing | W1 stated |
| MSC | 26B12 |
| Uses | Partial derivative, Differentiable function of several variables |
| Same as |
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What this page needs for W2
- edge equivalent in: a statement for each pair of definitions that a source proves equivalent (0 of 1)
- edge instance_of in: at least two examples (0 of 2)
- edge not_instance_of in: at least one non-example (0 of 1)
- edge specializes both: the more general notions and the special cases (0 of 1)
The writing levels say how complete the text of a page is. They do not measure its truth.
What links here
Used by
- Chain rule for a composition with a curve
- Laplacian
- Del operator
- Scalar potential
- Saddle point
- Conservative vector field
- Cheng–Yau gradient estimate
- Minimal surface equation
- Hamiltonian Monte Carlo
- Hamilton–Jacobi equation
- Stokes flow
- Gradient flow on a manifold
- Ginzburg–Landau equation
- Euler equations
- Keller–Segel model
- Brenier's theorem
- p-Laplacian
- Darcy's law
- Lamé equations of elasticity
- Geometric optics
- Navier–Stokes equations
- Level-set method
- Boltzmann equation
- Gradient estimates for harmonic functions
- Green's identities
- Transport equation
- Mean-field game
- Differential dynamic programming
- Envelope theorem
- Eikonal equation
- Adjoint state method
- Vlasov equation