39Axx Difference equations (For dynamical systems, see 37XX, for dynamic equations on time scales, see 34N05)
 39A05 General theory
 39A06 Linear equations
 39A10 Difference equations, additive

39A12 Discrete version of topics in analysis
(1)
 39A13 Difference equations, scaling (qdifferences) [See also 33Dxx]
 39A14 Partial difference equations
 39A20 Multiplicative and other generalized difference equations, e.g. of Lyness type
 39A21 Oscillation theory
 39A22 Growth, boundedness, comparison of solutions
 39A23 Periodic solutions
 39A24 Almost periodic solutions
 39A28 Bifurcation theory
 39A30 Stability theory
 39A33 Complex (chaotic) behavior of solutions
 39A45 Equations in the complex domain
 39A50 Stochastic difference equations
 39A60 Applications
 39A70 Difference operators [See also 47B39]
 39A99 None of the above, but in this section