Imagine an 11-year-old's bedroom papered wall-to-wall with calculus lecture notes, not posters or paintings but pages of integrals and dense mathematical symbols. That was Sofya Kovalevskaya's actual childhood. In this episode we explore the life of the Russian mathematician who clawed her way into becoming the greatest known woman scientist before the 20th century, despite an academic world that refused to admit her.

We trace the obstacles she demolished: a fictitious marriage to escape Russia, refusal after refusal from European universities, and the iron discipline that produced not one but three landmark works in a single year, including the Cauchy-Kovalevskaya theorem (which proves when a unique solution to a partial differential equation exists) plus original papers on Saturn's rings and elliptic integrals. As historian Roger C ...