I think we've all heard of L'Hôpital's rule when solving limits of the form $\frac{0}{0}$ or $\frac{\infty}{\infty}$ (for those doing calculus or real analysis at a higher level) but the other day my lecturer went through some interesting facts and background about l'Hôpital (other common names: Guillaume de l'Hôpital or Guillaume François Antoine, Marquis de l'Hôpital).
I went to Google on his full name (since everyone said that that was the shortened version) and the closest that I got to was "Guillaume-François-Antoine Marquis de l'Hôpital, Marquis de Sainte-Mesme, Comte d'Entremont and Seigneur d'Ouques-la-Chaise", even still they mentioned that his name was longer.
So, what was his full name? (I couldn't find any from my searches on Google)
(I was thinking about this while taking a break from my real analysis tutorials :) )
L'Hospital, withos, notô. The rest is the list of his titles, just like Prince Charles is Duke of Cornwall, Duke of Rothesay, Earl of Carrick, Baron of Renfrew, Lord of the Isles and Prince and Great Steward of Scotland. – Bernard Mar 30 '17 at 16:39L'Hospital? In his book (see https://archive.org/details/analysedesinfini00lhos) his name is written asde l'Hôpital. So far I assumed both are fine but why isL'Hospitalbetter? – martin.koeberl Mar 30 '17 at 16:48os > ôbefore a consonant in French dates back to the 18th century, after the death of the Divine Marquis… – Bernard Mar 30 '17 at 17:26os > ôhad begun, but it had not, as far as I know, when he was born (second third of the 17th century). – Bernard Mar 31 '17 at 08:51