Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

complex-analysis

The ML inequality

taught

Bounding the modulus of a contour integral by (max modulus of the integrand on the contour) times (the contour's length), without evaluating the integral.

Requires