11-00  General reference works (handbooks, dictionaries,
           bibliographies, etc.)
    11-01  Instructional exposition (textbooks, tutorial papers,
           etc.)
    11-02  Research exposition (monographs, survey articles)
    11-03  Historical (must also be assigned at least one
           classification number from Section 01)
    11-04  Explicit machine computation and programs (not the
           theory of computation or programming)
    11-06  Proceedings, conferences, collections, etc.
   
    11Axx  Elementary number theory {For analogues in number
           fields, see 11R04}
    11Bxx  Sequences and sets
    11Cxx  Polynomials and matrices
    11Dxx  Diophantine equations [See also 11Gxx, 14Gxx]
    11Exx  Forms and linear algebraic groups [See also 19Gxx]
           {For quadratic forms in linear algebra, see 15A63}
    11Fxx  Discontinuous groups and automorphic forms [See also
           11R39, 11S37, 14Gxx, 14Kxx, 22E50, 22E55,
           30F35, 32Nxx] {For relations with quadratic forms, see 11E45}
    11Gxx  Arithmetic algebraic geometry (Diophantine geometry)
           [See also 11Dxx, 14-XX, 14Gxx, 14Kxx]
    11Hxx  Geometry of numbers {For applications in coding
           theory, see 94B75}
    11Jxx  Diophantine approximation, transcendental number
           theory [See also 11K60]
    11Kxx  Probabilistic theory: distribution modulo $1$; metric
           theory of algorithms
    11Lxx  Exponential sums and character sums {For finite
           fields, see 11Txx}
    11Mxx  Zeta and $L$-functions: analytic theory
    11Nxx  Multiplicative number theory
    11Pxx  Additive number theory; partitions
    11Rxx  Algebraic number theory: global fields {For complex
           multiplication, see 11G15}
    11Sxx  Algebraic number theory: local and $p$-adic fields
    11Txx  Finite fields and commutative rings (number-theoretic
           aspects)
    11Uxx  Connections with logic
    11Yxx  Computational number theory [See also 11-04]
    11Z05  Miscellaneous applications of number theory