In the history of mathematics, Elsa-Karin Boestad-Nilsson is one of the names that keeps returning.
The record lists Elsa-Karin Boestad-Nilsson as mathematician and programmer (1925-2020).
Elsa-Karin Boestad-Nilsson was born at Stockholm in 1925. Her recorded nationality is Sweden.
Twentieth-century mathematics became abstract and highly specialised, and its methods reached into physics, economics and computing.
Mathematical work is judged by whether anyone can build on it, and that judgement takes decades.
That the work was done from Sweden matters: mathematical training, institutions and the language of publication have never been evenly distributed.
Elsa-Karin Boestad-Nilsson died in 2020, aged 95. The proofs remain, and a proof does not decay - which is the particular permanence mathematics offers.
