## 31.00.00 Electronic structure of atoms and molecules: theory

- 31.10.+z Theory of electronic structure, electronic transitions, and chemical binding (for theory and mathematical methods applied to electronic structure of biomolecules, see 87.10.-e)
- 31.15.-p Calculations and mathematical techniques in atomic and molecular physics (see also 02.70.-c Computational techniques, in mathematical methods in physics) (2)
- 31.30.-i Corrections to electronic structure (see also 03.30.+p Special relativity; for exotic atoms and molecules, see 36.10.-k; for applications of density-functional theory, see 31.15.es) (3)
- 31.50.-x Potential energy surfaces (for potential energy surfaces for chemical reactions, see 82.20.Kh; for collisions, see 34.20.-b) (1)
- 31.70.-f Effects of atomic and molecular interactions on electronic structure (see also section 34 Atomic and molecular collision processes and interactions)
- 31.90.+s Other topics in the theory of the electronic structure of atoms and molecules (restricted to new topics in section 31)