Diffusion and Wave Equations in Higher Dimensions
The following sections are included:
Diffusion Equation in Three Dimensional Space
Fourier Method for the Diffusion Equation in Higher Dimensions
Kirchoff's Formula for the Wave Equation. Huygens' Principle
Kirchoff's formula. Spherical means
Wave equation on R2. Method of descent. Huygens' principle
Fourier Method for the Wave Equation on the Plane. Nodal Sets