In the history of mathematics, Juan Gutiérrez de Gualda is one of the names that keeps returning.
The record lists Juan Gutiérrez de Gualda as Spanish mathematician.
Juan Gutiérrez de Gualda was born in 1520. His recorded nationality is Spain.
Symbolic algebra was taking shape in this period, and printing let a proof reach mathematicians who would never meet its author.
Mathematical work is judged by whether anyone can build on it, and that judgement takes decades.
That the work was done from Spain matters: mathematical training, institutions and the language of publication have never been evenly distributed.
Juan Gutiérrez de Gualda died in 1580, aged 60. The proofs remain, and a proof does not decay - which is the particular permanence mathematics offers.
