Euler, rather than claiming priority, was a staunch defender of Maupertuis, and Euler himself prosecuted König for forgery before the Berlin Academy on 13 April 1752.

He was " one of the first Esprits cavaliers of the age ," a man of broad knowledge, an expert in Newtonianism, architecture and music and a friend of most of the leading authors of his times: Voltaire, Jean-Baptiste de Boyer, Marquis d ' Argens, Pierre-Louis de Maupertuis and the atheïst Julien Offray de La Mettrie.

In the subsequent Battle of Maupertuis ( Poitiers ), English archery all but annihilated the French cavalry, and John was captured.

Pierre-Louis Moreau de Maupertuis (; 17 July 1698 – 27 July 1759 ) was a French mathematician, philosopher and man of letters.

Maupertuis was born at Saint-Malo, France, to a moderately wealthy family of merchant-corsairs.

He was chosen in the same year to accompany Pierre Louis Maupertuis and Alexis Clairaut on their geodetical expedition for measuring a meridian arc of approximately one degree's length to Torne Valley in Lapland.

In 1736, together with Pierre Louis Maupertuis, he took part in the expedition to Lapland, which was undertaken for the purpose of estimating a degree of the meridian arc.

One expedition under Pierre Louis Maupertuis ( 1736 – 37 ) was sent to Torne Valley ( as far North as possible ).

In application to physics, Maupertuis suggested that the quantity to be minimized was the product of the duration ( time ) of movement within a system by the " vis viva ",

In contentious proceedings, König was accused of forgery, and even the King of Prussia entered the debate, defending Maupertuis, while Voltaire defended König.

In 1730 he was made professor of hydrography at Havre, and succeeded Pierre Louis Maupertuis as associate geometer of the Academy of Sciences.

He was afterwards promoted in the Academy to the place of Maupertuis, and went to reside in Paris.

The expedition to Torne Valley was led by Pierre Louis Maupertuis.

By measuring the length of the arc, Maupertuis ' team was able to prove that the Earth is, indeed, flattened at the poles as sir Isaac Newton had predicted.

Much of his time, however, was spent in Paris, and it is likely that during this time he made the acquaintance of Maupertuis and the Marquise de Chatelet.

So strong was the feeling against him that in 1748 he was compelled to leave for Berlin, where, thanks in part to the offices of Maupertuis, the Prussian king Frederick the Great not only allowed him to practise as a physician, but appointed him court reader.

The crater was named for the French mathematician and astronomer Pierre Louis Maupertuis ( 1698 – 1759 ).

The first of these was the one commissioned by the French Academy of Sciences in 1735-1738, involving measurement expeditions to Lapland ( Maupertuis et al.

The constellation Rangifer was created by the French astronomer Lemonnier in 1736 to commemorate the expedition of Maupertuis to Lapland.

He was a friend of Voltaire, Pierre-Louis de Maupertuis, Leonhard Euler, Samuel Formey, Andreas Sigismund Marggraf, Charles-Louis de Beausobre, the Abbé de Prades, Casanova, Friedrich Nicolai and Moses Mendelssohn.

In 1736, he participated in the expedition organized for that purpose by the French Academy of Sciences, led by the French mathematician Pierre Louis Maupertuis ( 1698 – 1759 ) to measure a degree of latitude.

* June 19 – French Academy of Sciences expedition led by Pierre Louis Maupertuis, with Anders Celsius, begins work on measuring a meridian arc in the Torne Valley of Finland.

As he grew older, he began to seek more lasting distinctions, stimulated by the success of Pierre Louis Maupertuis as a mathematician, of Voltaire as a poet, and of Montesquieu as a philosopher.

He is often credited with having invented the principle of least action ; a version is known as Maupertuis ' principle – an integral equation that determines the path followed by a physical system.

In 1736 Maupertuis acted as chief of the French Geodesic Mission sent by King Louis XV to Lapland to measure the length of a degree of arc of the meridian.

* June 19-French Academy of Sciences expedition led by Pierre Louis Maupertuis, with Anders Celsius, begins work on measuring a meridian arc in the Torne Valley of Finland.

The books describing this trip, written by Maupertuis

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Maupertuis.

Käymäjärvi Inscriptions as drawn by Pierre Louis Maupertuis in 1737.

Doctor Akakia ( full title: Histoire du Docteur Akakia et du Natif de St Malo ) is a satirical essay of a very biting nature by Voltaire, directed against pretentious pedants of science in the person of Maupertuis, the President of the Royal Academy of Sciences at Berlin, which so excited the anger of Frederick the Great, the patron of the Academy, that he ordered it to be burnt by the common hangman, after 30, 000 copies of it had been sold in Paris.

The statement that " we live in the best of all possible worlds " drew scorn, most notably from Voltaire, who lampooned it in his comic novella Candide by having the character Dr. Pangloss ( a parody of Leibniz and Maupertuis ) repeat it like a mantra.

In 1735 and 1736 brought out two treatises on the figure of the earth ; but these attempts to solve geometrical problems by literary material were, to a great extent, refuted by Maupertuis ' measurements of a degree within the polar circle.

* July 27 – Pierre Louis Maupertuis, French mathematician ( b. 1698 )

* July 17 – Pierre Louis Moreau de Maupertuis, French mathematician ( d. 1759 )

* Pierre Louis Moreau de Maupertuis ( 1698 – 1759 ), mathematician and astronomer

* July 17-Pierre Louis Moreau de Maupertuis, French mathematician ( died 1759 )

* Pierre Louis Maupertuis ( 1698 – 1759 ), a French mathematician and philosopher

But the credit for the formulation of the principle as it applies to the action is often given to Pierre-Louis Moreau de Maupertuis, who wrote about it in 1744 and 1746.

Credit for the formulation of the principle of least action is commonly given to Pierre Louis Maupertuis, who felt that " Nature is thrifty in all its actions ", and applied the principle broadly:

In the 1740s, Pierre-Louis Moreau de Maupertuis made the first known suggestion in a series of essays that all organisms may have had a common ancestor, and that they had diverged through random variation and natural selection.

La Condamine had many friends, the closest one being Maupertuis whom he bequeathed his papers.