Joseph-Louis Comte de Lagrange
from the birth certificate:
Giuseppe Lodovico Lagrangia
25 gennaio 1736
figlio di
Giuseppe Francesco Lodovico
e di
Maria Teresa Gros
to Euler in 1754
from the Tautochrone Problem
to maximizing and minimizing
functionals
Euler and the Calculus of Variations
"with
characteristic courtesy he withheld a paper
he had previously written, which covered some of the
same ground, in order that the young Italian might have time
to complete his work, and claim the undisputed
invention of the new calculus"
from Galletto. D, “The Genesis of Mechanic Analytique”
Atti Accad. Sci. Torino Cl. Sci. Fis. Mat. Natur. 126 (1992), suppl. 2
?
1757 “Societas privata taurinensis”
is founded
GIOVANNI FRANCESCO CIGNA
Mondovi, 1734
GIUSEPPE LUIGI DE LAGRANGIA
Torino, 1736
ANGELO GIUSEPPE SALUZZO
Conte di Monesiglio
Saluzzo, 1734
Giovanni Battista Beccaria
Mondovi, 1716 – Torino, 1781
Benjamin Franklin
Filadelfia, 1706 – Washington, 1790
Miscellanea taurinensia
1783 King Vittorio Amedeo III
gives the royal patents
to the private society
AVOGADRO
Conte
Lorenzo Romano Amedeo Carlo
Avogadro di Quaregna e di Cerreto .
TORINO, 1776 - 1856
The Theorem of the 4 Elephants
Ascanio Sobrero (1812 - 1888)
The synthesis of nitroglycerine
Galileo Ferraris (1847 - 1897)
1. the Transformer
2. the Transmission of Electric
Energy
3. the Asynchronous Motor
The Problem of the 3 Bodies
The Problem of the three Bodies
(and the Lagrangian points)
1766
Euler left Berlin for Saint Petersburg
and Lagrange left Turin for Berlin
“I wish that the greatest king
in Europe has the greatest
mathematician in Europe
resident in his court.”
The Analytical Mechanics
The methods I am describing require
neither geometrical neither mechanical
constructions or reasonings
but only algebraic operations.
1786
Frederick died and Lagrange
left Berlin for Paris
1789
The French Revolution Explosion
De Lagrange
Lagrange
Weights and measurements
1799 Napoleon Bonaparte
installed himself as First Consul
Napoleon loaded
Lagrange with
honours and
dinstinctions.
1813
Lagrange died and was buried in
Pantheon
JOSEPH LOUIS LAGRANGE.
Senator. Count of the Empire.
Grand Officer of the Legion of Honour.
Grand Cross of the
Imperial Order of Réunion.
Member of the Institute
and the Bureau of Longitude.
Born in Turin on 25 January 1736.
Died in Paris on 10 April 1813.
Why his work was so important
1.the variational calculus
2.the principle of least action
3.the lagrangian function
4.the integration of time in a continuous space-time