### 42-XX Fourier analysis

- 42-00 General reference works (handbooks, dictionaries, bibliographies, etc.)
- 42-01 Instructional exposition (textbooks, tutorial papers, etc.)
- 42-02 Research exposition (monographs, survey articles)
- 42-03 Historical (must be assigned at least one classification number from 01-XX)
- 42-04 Explicit machine computation and programs (not the theory of computation or programming)
- 42-06 Proceedings, conferences, collections, etc.
- 42Axx Fourier analysis in one variable
- 42Bxx Fourier analysis in several variables, {For automorphic theory, see mainly 11F30}
- 42Cxx Nontrigonometric Fourier analysis

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