Paolo Ruffini
Paolo Ruffini | |
|---|---|
 Paolo Ruffini | |
| Born | September 22, 1765 |
| Died | May 9, 1822 |
| Nationality | Italian |
| Scientific career | |
| Fields | mathematics |
Paolo Ruffini (September 22, 1765 – May 10, 1822) was an Italian mathematician and philosopher.
By 1788 he had earned university degrees in philosophy, medicine/surgery, and mathematics. Among his work was an incomplete proof (Abel–Ruffini theorem[1]) that quintic (and higher-order) equations cannot be solved by radicals (1799[2]), and Ruffini's rule[3] which is a quick method for polynomial division. Ruffini also made contributions to group theory[4] in addition to probability and quadrature of the circle.
He practiced as both a professor of mathematics (University of Modena) and a doctor[5] including scientific work[6] on typhus.
Publications
1799: "La teoria generale delle equazioni in cui è provato che la soluzione algebrica di equazioni di grado maggiore di 4 è impossibile"
1802: "Riflessioni intorno alla rettificazione ed alla quadratura del circulo"
1802: "Della soluzione delle equazioni algebraiche determinata partocolari di grado sup. al 4º"
1804: "Sopra la determinazione delle radici nelle equazioni numeriche di qualunque grado"
1806: "Della immortalità dell’anima"
1807: "Algebra elementare"
1820: "Memoria sul tifo contagioso"
1821: "Riflessioni critiche sopra il saggio filosofico intorno alle probabilità del signor conte Laplace"
References
- ^ http://www.britannica.com/EBchecked/topic/512337/Paolo-Ruffini
- ^ Teoria Generale delle Equazioni, in cui si dimostra impossibile la soluzione algebraica delle equazioni generali di grado superiore al quarto.
- ^ O'Connor, John J.; Robertson, Edmund F., "Paolo Ruffini", MacTutor History of Mathematics Archive, University of St Andrews
- ^ http://www.stetson.edu/~efriedma/periodictable/html/Rf.html
- ^ Paolo Ruffini --- Catholic Encyclopedia article.
- ^ Memoria sul tifo contagioso.
 | This article about an Italian mathematician is a stub. You can help Wikipedia by expanding it. |