Equations of Mathematical Physics
- Deduction of the wave equation. String vibration equation.
- Deduction of the heat equation.
- Classification of the second order differential equations with partial derivatives of the two independent variables.
- Statement of the boundary problems. Correctness
String vibration equation.
- Heat equation
- Laplace equation
- Adamar’s problem
- Cauchy problem. Characteristics.
- Hyperbolic type of equation. Cauchy problem for the vibration equation. D’alamber’s formula(n=1).
- Cauchy problem for wave equation (n=2).
- Theorem about uniqueness of solution of the Cauchy problem.
- Fourier method (method of separated variables)for the mixed problem for the wave equation.
- Justification of Fourier method.
- Non-homogeneous equation of string vibration. Fourier method.
- Parabolic type. Heat equation.
- Mixed problem for the heat equation.
- Maximum principle for heat equation.
- Theorem of uniqueness of solution of the mixed problem.
- Cauchy problem for the heat equation.
- Deduction of the Poisson formula for solution of Cauchy problem.
- Justification of Poisson formula.
- Continuous dependence of solution of Cauchy problem of initial data.
- Physical means of the fundamental solution of Cauchy problem for the heat equation.
- Elliptic type. Laplace operator.
- Laplace operator in 3-dimensional space.
- Laplace operator in 2-dimensional space or plane.
- Green formula.
- Integral interpretation of an arbitrary continuous differentiable function.
- Major property.
- The major properties of harmonic function on an exterior of domain.
- Potential.
- Properties of volume potential.
- Lapunov surface.
- Gauss integral.
- Properties of twice-layer potential.
- Properties of prime-layer potential.
- The normal derivative of prime-layer potential.
- Uniqueness of the intern Dirichlet’s problem for Laplace equation.
- Uniqueness of the extern Dircihlet’s problem for the Laplace equation.
- Green function for Laplace operator.
- Properties of Green function.
- Construction of Green function for sphere.
- Uniqueness of extern Neuman problem.
- Solution of intern Neuman problem.