## Mathematics Subject Classification – MSC2010

General reference works (handbooks, dictionaries, bibliographies, etc.) 60

Instructional exposition (textbooks, tutorial papers, etc.) 990

Research exposition (monographs, survey articles) 2586

Explicit machine computation and programs (not the theory of computation or programming) 644

Transform methods (e.g. integral transforms) 2571

Laplacian operator, reduced wave equation (Helmholtz equation), Poisson equation [See also 31Axx, 31Bxx] 13502

Equations and systems of special type (mixed, composite, etc.) 4280

Miscellaneous topics [For equations on manifolds, see 58Jxx; for manifolds of solutions, see 58Bxx; for stochastic PDE, see also 60H15] 38369

Partial differential equations on graphs and networks (ramified or polygonal spaces) 274

Partial differential equations on infinite-dimensional (e.g. function) spaces (= PDE in infinitely many variables) [See also 46Gxx, 58D25] 587