Mathematics subject classification - AMS

0	General	46	Functional analysis
1	History and biography	47	Operator theory
3	Mathematical logic and foundations	49	Calculus of variations and optimal
4	Set theory		control; optimization
5	Combinatorics	51	Geometry
6	Order, lattices, ordered algebraic	52	Convex and discrete geometry
	structures	53	Differential geometry
8	General algebraic systems	54	General topology
10	Number theory (till 1987)	55	Algebraic topology
11	Number theory	57	Manifolds and cell complexes
AL	Algebra general, textbooks	58	Global analysis and analysis on
12	Field theory and polynomials		manifolds
13	Commutative rings and algebras	60	Probability theory and
14	Algebraic geometry		stochastic processes
15	Linear and multilinear algebra;	62	Statistics
	matrix theory	65	Numerical analysis
16	Associative rings and algebras	68	Computer science
17	Nonassociative rings and algebras	LP	Physics textbooks
18	Category theory, homological algebra	70	Mechanics of particles and systems
19	K-theory	73	Mechanics of solids
20	Group theory and generalizations	74	Mechanics of deformable solids
22	Topological groups, Lie groups	76	Fluid mechanics
DI	Analysis	78	Optics, electromagnetic theory
26	Real functions	80	Classical thermodynamics, heat transfer
28	Measure and integration	81	Quantum theory
30	Functions of a complex variable	82	Statistical mechanics,
31	Potential theory		structure of matter
32	Several complex variables and	83	Relativity and gravitational theory
	analytic spaces	85	Astronomy and astrophysics
33	Special functions	86	Geophysics
34	Ordinary differential equations	90	Operations research,
35	Partial differential equations		mathematical programming
37	Dynamical systems and ergodic theory	91	Game theory, economics, social and
39	Difference and functional equations		behavioral sciences
40	Sequences, series, summability	92	Biology and other natural sciences
41	Approximations and expansions	MN	Mathem. for natural sciences (till 2000)
42	Fourier analysis	93	Systems theory, control
43	Abstract harmonic analysis	94	Information and communication
44	Integral transforms, operational		circuits
	calculus	97	Mathematical education (2002 ff.)
45	Integral equations	MD	Mathematical education (till 2001)