Project GutenbergThe Jagged, Monstrous Function That Broke Calculus
In the late 19th century, Karl Weierstrass invented a fractal-like function that was decried as nothing less than a “deplorable evil.” In time, it would transform the foundations of mathematics.
by Solomon Adams
https://www.quantamagazine.org/the-jagged-monstrous-function-that-broke-calculus-20250123/
Theorie der Abel'schen Functionen at PG:
https://www.gutenberg.org/ebooks/29780
