Lodovico Ferrari

Lodovico de Ferrari (2 February 1522 – 5 October 1565) was an Italian mathematician best known today for solving the biquadratic equation.

Lodovico settled in Bologna, and he began his career as the servant of Gerolamo Cardano.

While still in his teens, Ferrari was able to obtain a prestigious teaching post in Rome after Cardano resigned from it and recommended him.

[2]: 18 In 1545 a famous dispute erupted between Ferrari and Cardano's contemporary Niccolò Fontana Tartaglia, involving the solution to cubic equations.

Widespread stories that Tartaglia devoted the rest of his life to ruining Ferrari's teacher and erstwhile master Cardano, however, appear to be fabricated.