Spherical harmonic ...
Orthogonal polynom ...
Chebyshev and Four ...
Pade-type approxim ...
Biorthogonality an ...
The classical orth ...
Fourier series and ...
Geometry of polyno ...
Fourier series in ...
Schaum's outline o ...
Tensor and vector ...
The Vector analysi ...
Vector analysis wi ...
Vector and tensor ...
Calculus of variat ...
The calculus of va ...