## Mathematics Subject Classification – MSC2020

History of ordinary differential equations [Consider also classification numbers pertaining to Section 01-XX] 330

Theoretical approximation of solutions to ordinary differential equations {For numerical analysis, see 65Lxx} 3632

Boundary value problems for ordinary differential equations {For ordinary differential operators, see 34Lxx} 31688

Dynamic equations on time scales or measure chains {For real analysis on time scales, see 26E70} 1595

Dynamic equations on time scales or measure chains {For real analysis on time scales or measure chains, see 26E70} 1588