Mathematical Sciences Classification System

42Cxx - Nontrigonometric harmonic analysis

  • 33
    42C05
    Orthogonal functions and polynomials, general theory [See also 33C45, 33C50, 33D45]
  • 6
    42C10
    Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.)
  • 22
    42C15
    General harmonic expansions, frames
  • 42C20
    Other transformations of harmonic type
  • 42C25
    Uniqueness and localization for orthogonal series
  • 1
    42C30
    Completeness of sets of functions
  • 105
    42C40
    Wavelets and other special systems
  • 42C99
    None of the above, but in this section

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