Topic: Lebesgue Measurable Sets and Regularity

Measurability of Intervals

Lebesgue Sets as Borel Sets Up to Null Sets

Inner Regularity from Complements

G_delta Hulls of Measurable Sets

Finite-Interval Approximation in Measure

F_sigma Approximations from Within

Countable Sets and Dense Null Examples

Constructing the Middle-Third Cantor Set

Completeness of Lebesgue Measure

Compact Approximation of Bounded Measurable Sets