37Nxx Applications
 37N05 Dynamical systems in classical and celestial mechanics [See mainly 70Fxx, 70Hxx, 70Kxx]
 37N10 Dynamical systems in fluid mechanics, oceanography and meteorology [See mainly 76XX, especially 76D05, 76F20, 86A05, 86A10]

37N15 Dynamical systems in solid mechanics [See mainly 74Hxx]
(1)
 37N20 Dynamical systems in other branches of physics (quantum mechanics, general relativity, laser physics)
 37N25 Dynamical systems in biology [See mainly 92XX, but also 91XX]
 37N30 Dynamical systems in numerical analysis
 37N35 Dynamical systems in control
 37N40 Dynamical systems in optimization and economics
 37N99 None of the above, but in this section