# Josef Hoëné de Wronski

### Born: 23 Aug 1778 in Wolsztyn, Poland

Died: 8 Aug 1853 in Neuilly (near Paris), France

**Hoëné Wronski** was born Josef Hoëné but he adopted the name Wronski
around 1810 just after he married. He had moved to France and become a French
citizen in 1800 and then, in 1810 he moved to Paris.
His first memoir on the foundations of mathematics was published there in
1810 but, after it received less than good reviews from
Lacroix and Lagrange, Wronski broke off relations with the Institute in Paris.

Among other things he did was design caterpillar vehicles to compete with the
railways. However they were never manufactured.

His main work involved applying philosophy to mathematics, the philosophy taking
precedence over rigorous mathematical proofs. He criticised Lagrange's use of
infinite series and introduced his own ideas for series expansions of a function.
The coefficients in this series are determinants now known as Wronskians
(so named by Muir in 1882).

In 1812 he published a work claiming to show that every equation had an algebraic
solution, contradicting Ruffini's results which were already published. Wronski's
work here, although of course wrong, nevertheless still has important applications.

Wronski spent the years 1819 to 1822 in London. He came to England to try to
obtain an award from the Board of Longitude but his instruments were detained by
the Customs as he entered the country. He found himself in severe financial
difficulties but, after his instruments had been returned to him, he was able to
address the Board of Longitude. His address *On the Longitude* only
contained generalities and did not impress.

His book *Introduction to a course in mathematics* was published in
London in 1821.

For many years Wronski's work was dismissed as rubbish. However a closer
examination of the work in more recent times shows that, although some is wrong
and he has an incredibly high opinion of himself and his ideas, there is also
some mathematical insights of great depth and brilliance hidden within the
papers.