Every idea in this atlas arrives with the people who fought for it. The Method of Characteristics: Solving First-Order PDEs did not appear fully formed — it was argued over, abandoned, and rediscovered across the Euler's Century (1730 CE - 1800 CE).
INTERACTIVE LESSON
The cinematic story and the hands-on exercises for this topic are being written. They'll appear here — playable on their own page — the moment this lesson is authored.