30L99 None of the above, but in this section

31-XX Potential theory {For probabilistic potential theory, see <a href="#code:60J45">60J45</a>}

31-00 General reference works (handbooks, dictionaries, bibliographies, etc.)

31-01 Instructional exposition (textbooks, tutorial papers, etc.)

31-02 Research exposition (monographs, survey articles)

31-03 Historical (must also be assigned at least one classification number from Section 01)

31-04 Explicit machine computation and programs (not the theory of computation or programming)

31-06 Proceedings, conferences, collections, etc.

31A05 Harmonic, subharmonic, superharmonic functions

31A10 Integral representations, integral operators, integral equations methods

31A15 Potentials and capacity, harmonic measure, extremal length [See also <a href="#code:30C85">30C85</a>]

31A20 Boundary behavior (theorems of Fatou type, etc.)

31A25 Boundary value and inverse problems

31A30 Biharmonic, polyharmonic functions and equations, Poisson's equation

31A35 Connections with differential equations

31A99 None of the above, but in this section

31B05 Harmonic, subharmonic, superharmonic functions

31B10 Integral representations, integral operators, integral equations methods

31B15 Potentials and capacities, extremal length

31B20 Boundary value and inverse problems

31B30 Biharmonic and polyharmonic equations and functions

31B35 Connections with differential equations

31B99 None of the above, but in this section

31C05 Harmonic, subharmonic, superharmonic functions

31C10 Pluriharmonic and plurisubharmonic functions [See also <a href="#code:32U05">32U05</a>]

31C12 Potential theory on Riemannian manifolds [See also <a href="#code:53C20">53C20</a>; for Hodge theory, see <a href="#code:58A14">58A14</a>]

31C20 Discrete potential theory and numerical methods

31C35 Martin boundary theory [See also <a href="#code:60J50">60J50</a>]

31C45 Other generalizations (nonlinear potential theory, etc.)

31C99 None of the above, but in this section

31D99  None of the above, but in this section

31Exx  Potential theory on metric spaces