Sofia Kovalevskaya (1850–1891), born Sofya Vasilyevna Korvin-Krukovskaya in Moscow, was a trailblazing Russian mathematician, novelist, and women’s rights advocate. From an aristocratic family—her father a general and her mother linked to scientists—she showed early mathematical talent but faced restrictions on women’s education in tsarist Russia.
In 1868, she entered a fictitious marriage with palaeontologist Vladimir Kovalevsky for independence, enabling study abroad. At Heidelberg University (1869), she attended lectures as one of the first women, then pursued private lessons with Karl Weierstrass in Berlin after formal admission was denied.
In 1874, Göttingen awarded her a doctorate summa cum laude in absentia for three seminal papers, including the Cauchy-Kovalevskaya theorem on partial differential equations—the first modern math PhD for a woman.
After a brief return to Russia, where she bore a daughter in 1878 and separated from her husband in 1881, she accepted Gösta Mittag-Leffler’s invitation to Stockholm University in 1883. She became a lecturer, then Europe’s first female full mathematics professor in 1889, edited Acta Mathematica, and won the Prix Bordin in 1888 for rigid body dynamics research.
In Stockholm, Kovalevskaya formed a profound, intimate friendship with Anne Charlotte Edgren-Leffler (1849–1892), Mittag-Leffler’s sister, a prominent Swedish playwright, novelist, feminist author, and realist pioneer (known as Duchess of Cajanello after remarriage). Their close bond—often described as romantic—inspired collaborative plays and mutual support. Edgren-Leffler wrote the first biography of Kovalevskaya shortly after her death.
Kovalevskaya authored literary works like the memoir A Russian Childhood and novel Nihilist Girl, blending science, politics, and feminism. She died of influenza in Stockholm on February 10, 1891, aged 41, leaving an enduring legacy as a barrier-breaker in mathematics and female equality.
You can see a video about Sofya at our TikTok.
