### 81-XX Quantum Theory

- 81-00 General reference works (handbooks, dictionaries, bibliographies, etc.)
- 81-01 Instructional exposition (textbooks, tutorial papers, etc.)
- 81-02 Research exposition (monographs, survey articles)
- 81-03 Historical (must be assigned at least one classification number from 01-XX)
- 81-04 Explicit machine computation and programs (not the theory of computation or programming)
- 81-05 Experimental papers
- 81-06 Proceedings, conferences, collections, etc.
- 81-08 Computational methods
- 81Pxx Axiomatics, foundations, philosophy
- 81Qxx General mathematical topics and methods in quantum theory
- 81Rxx Groups and algebras in quantum theory
- 81Sxx General quantum mechanics and problems of quantization
- 81Txx Quantum field theory; related classical field theories
- 81Uxx Scattering theory, see also {47A40}
- 81Vxx Applications to specific physical systems

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