Archive for Abel

You are browsing the archives of Abel.

1802 – Abel – bio

Niels Henrik Abel was born in 1802 in Norway and became a mathematician. He tried and failed to find a solution for the quintic equation and then completed Ruffini’s incomplete proof that it could not always be solved using radicals. This is now known as Abel’s impossibility theorem or the Abel–Ruffini theorem. Jacobi and Abel […]

1765 – Ruffini – bio

Paolo Ruffini was born in Italy in 1765 and was a mathematician. After the cubic equation was solved in 1539 by del Ferro, Tartaglia and Cardano, and Ferrari had solved the quartic equation by 1545, mathematicians turned their attention toward attempting to solve the quintic. The previous polynomial equations (quadratic, cubic and quartic) had all […]