Original article link
Poisson equation is a mathematical partial differential equation that is common in electrostatic, mechanical engineering, and theoretical physics. It is named after French mathematicians, physicists, and physicists. Poisson Equation
Here, △represents the Laplace operator, while F and θ can be real or complex numerical equations on the manifold. When the manifold belongs to the Euclidean space, and the Laplace operator is usually expressed as, the Poisson equation is usually written
In the three-dimensional Cartesian coordinate system, it can be written
Without F, this equation will become the Laplace equation.
In addition
In mathematics and physics, the Laplace operator or the Laplace operator (Laplace operator or Laplacian) is a differential operator, which is generally written as a Delta or operator. It is named to commemorate Pierre-Simon Laplace.
The Laplace operator has many functions and is also an important example of an elliptical operator.
In physics, it is often used in the mathematical model of wave equations, the heat conduction equation, and the limhoz equation.
In electrostatic science, applications of Laplace and Poisson equations are everywhere. In quantum mechanics, it represents the kinetic energy term in the schödnex equation.
In mathematics, a function that is computed by the Laplace operator to zero is called a harmonic function. The Laplace operator is the core of the huochi theory and the result of the simultaneous adjustment of diram.
[Edit] Definition
The Laplace operator is a second-order differential operator in the n-dimensional Euclidean space. It is defined as the divergence () of the gradient (). Therefore, if F is a second-order real function, the Laplace operator of F is defined:
-
(1)
The Laplace operator of F is also all non-mixed second-order partial derivatives in the Cartesian coordinate system XI:
-
(2)
As a second-order differential operator, the Laplace operator maps the CK function to the Ck-2 function, for k ≥ 2. Expression (1) (or (2) defines an operator delta: CK (RN) → Ck-2 (RN), or, more generally, defines an operator delta: CK (Ω) → Ck-2 (Ω), for any open set Ω.
The Laplace operator of the function is also the trace of the matrix of the function:
-
Coordinate Representation
Two-Dimensional Space
-
-
X and Y represent the Cartesian coordinates on the x-y plane.
-
In addition, the polar coordinate representation is:
3D space
-
Representation in the flute Coordinate System
-
Representation in a Cylindrical Coordinate System
-
Representation in the Spherical Coordinate System
Poisson equation solution