The Swiss Maestro needs no introduction. His style is often described as geometric : acute angles, graceful arcs, and precise placement. Tennis commentators sometimes say he "draws Euclidean lines on the court."
A "monumental" and "comprehensive treatise" that remains a primary reference for professionals. federer geometric measure theory pdf
Federer and Geometric Measure Theory:
Known as a "canonical big bad book". Its notation is extremely rigorous and can be "suffocating" for beginners. Pros and Cons Any good comprehensive graduate texts on measure theory? The Swiss Maestro needs no introduction