Below you see the MCS codes list with links to the forums already created. To require the creation of a new forum, please contact


MSC codes (first level)

  • General and Foundations
    00: General
    (including recreational mathematics, philosophy of mathematics and mathematical modeling.)
    01: History and biography
    03: Mathematical logic and foundations
    (including model theory, computability theory, set theory, proof theory, and algebraic logic)
  • Discrete Mathematics and Algebra
    05: Combinatorics
    06: Order theory
    08: General algebraic systems
    11: Number theory
    12: Field theory and polynomials
    13: Commutative rings and algebras
    14: Algebraic geometry
    15: Linear and multilinear algebra; matrix theory
    16: Associative rings and associative algebras
    17: Non-associative rings and non-associative algebras
    18: Category theory; homological algebra
    19: K-theory
    20: Group theory and generalizations
    22: Topological groups, Lie groups, and analysis upon them
  • Analysis
    26: Real functions, including derivatives and integrals
    28: Measure and integration
    30: Complex functions, including approximation theory in the complex domain
    31: Potential theory
    32: Several complex variables and analytic spaces
    33: Special functions
    34: Ordinary differential equations
    35: Partial differential equations
    37: Dynamical systems and ergodic theory
    39: Difference equations and functional equations
    40: Sequences, series, summability
    41: Approximations and expansions
    42: Harmonic analysis
    (including Fourier analysis, Fourier transforms, trigonometric approximation, trigonometric interpolation, and orthogonal functions)
    43: Abstract harmonic analysis
    44: Integral transforms, operational calculus
    45: Integral equations
    46: Functional analysis
    (including infinite-dimensional holomorphy, integral transforms in distribution spaces)
    47: Operator theory
    49: Calculus of variations and optimal control; optimization
  • Geometry and Topology
    51: Geometry
    52: Convex geometry and discrete geometry
    53: Differential geometry
    54: General topology
    55: Algebraic topology
    57: Manifolds
    58: Global analysis, analysis on manifolds
    (including infinite-dimensional holomorphy)
  • Applied Mathematics and Other 
    60 Probability theory, stochastic processes
    62 Statistics
    65 Numerical analysis
    68 Computer science
    70 Mechanics
    (including particle mechanics)
    74 Mechanics of deformable solids
    76 Fluid mechanics
    78 Optics, electromagnetic theory
    80 Classical thermodynamics, heat transfer
    81 Quantum theory
    82 Statistical mechanics, structure of matter
    83 Relativity and gravitational theory
    (including relativistic mechanics)
    85 Astronomy and astrophysics
    86 Geophysics
    90 Operations research, mathematical programming
    91 Game theory, economics, social and behavioral sciences
    92 Biology and other natural sciences
    93 Systems theory; control
    (including optimal control)
    94 Information and communication, circuits
    97 Mathematics education

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