11Dxx Diophantine equations [See also 11Gxx, 14Gxx]
 11D04 Linear equations
 11D07 The Frobenius problem
 11D09 Quadratic and bilinear equations
 11D25 Cubic and quartic equations
 11D41 Higher degree equations; Fermat`s equation
 11D45 Counting solutions of Diophantine equations
 11D57 Multiplicative and norm form equations
 11D59 ThueMahler equations
 11D61 Exponential equations
 11D68 Rational numbers as sums of fractions
 11D72 Equations in many variables [See also 11P55]
 11D75 Diophantine inequalities [See also 11J25]
 11D79 Congruences in many variables
 11D85 Representation problems [See also 11P55]
 11D88 padic and power series fields

11D99 None of the above, but in this section
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