Number Theory 2.2 : First Chebyshev Function (PNT 2/5)

From a channel Lumen includes in full: Fematika makes animated, course-style lessons on algebraic topology, manifolds and category theory, with definitions and proofs presented carefully.

A 11-minute video from Fematika's catalogue; the title names its topic.

Video by Fematika, played through YouTube's embedded player.