# Mathematician:Paolo Ruffini

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## Mathematician

Italian mathematician and philosopher.

Most famous for his incomplete proof of what is now known as the Abel-Ruffini Theorem proving the insolubility of the general quintic with radicals.

## Nationality

Italian

## History

- Born: 22 Sept 1765 in Valentano, Papal States (now Italy)
- Died: 10 May 1822 in Modena, Duchy of Modena (now Italy)

## Theorems and Definitions

Results named for **Paolo Ruffini** can be found here.

## Publications

- 1799:
*La teoria generale delle equazioni*(2 volumes) - 1802:
*Riflessioni intorno alla rettificazione ed alla quadratura del circulo*(on squaring the circle) - 1802:
*Della soluzione delle equazioni algebraiche determinata partocolari di grado sup. al 4º*(The solution of particular equations whose order is greater than 4) - 1804:
*Sopra la determinazione delle radici nelle equazioni numeriche di qualunque grado* - 1806:
*Della immortalità dell'anima*(On the immortality of the soul) - 1807:
*Algebra elementare*(Elementary algebra) - 1820:
*Memoria sul tifo contagioso*(Memoir on contagious typhus) - 1821:
*Riflessioni critiche sopra il saggio filosofico intorno alle probabilità del signor conte Laplace*(Critical review on the philosophical writing of Laplace on probability)

My Italian is not good - I may have mistranslated or misinterpreted some of the above.

## Sources

- 1971: Allan Clark:
*Elements of Abstract Algebra*... (previous) ... (next): Introduction - 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): A List of Mathematicians in Chronological Sequence - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): A List of Mathematicians in Chronological Sequence - 2004: Ian Stewart:
*Galois Theory*(3rd ed.) ... (previous) ... (next): Historical Introduction: Polynomial Equations - 2008: David Joyner:
*Adventures in Group Theory*(2nd ed.) ... (previous) ... (next): Where to begin...