Louise Petrén-Overton

Hedvig Louise Beata Petrén-Overton (August 12, 1880 – January 14, 1977) was a Swedish mathematician, the first woman in Sweden with a doctorate in mathematics.

[1] With two older sisters doing the housework, she was left free to concentrate on her studies.

[1][2] As a child, ill with scarlet fever, she told her family that she would not go to heaven unless she could bring her mathematics books there.

[1] Nail H. Ibragimov writes that Petrén "made a profound contribution to the constructive integration theory of partial differential equations in the direction initiated by Euler and continued by Laplace, Legendre, Imschenetsky, Darboux, Goursat.

"[3] Petrén married Ernest Overton, a professor at Lund, but as a woman could not obtain a position there herself.