## Mathematics Subject Classification – MSC2020

Continuity and related questions (modulus of continuity, semicontinuity, discontinuities, etc.) for real functions in one variable {For properties determined by Fourier coefficients, see 42A16; for those determined by approximation properties, see 41A25, 41A27} 2446

Inequalities in real analysis {For maximal function inequalities, see 42B25; for functional inequalities, see 39B72; for probabilistic inequalities, see 60E15} 16535

Real analysis on time scales or measure chains {For dynamic equations on time scales or measure chains, see 34N05} 422