Kovalevskaya passed away in Stockholm due to pneumonia shortly after turning 41.
Sofia Kovalevskaya died on February 10, 1891, in Stockholm, Sweden, succumbing to pneumonia shortly after celebrating her 41st birthday. Her untimely death marked the loss of a brilliant mind whose contributions to mathematics were profound and far-reaching. Despite the societal limitations of her era, her lasting legacy in mathematical sciences and her role as a trailblazer for women in academia endure. Kovalevskaya's work continues to inspire mathematicians and advocates for gender equality in science.