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Biography and bibliography; R Taton, Biography in Dictionary of Scientific Biography (New York 1970-1990). J M C de Condorcet, Eloge de M Fontaine, Histoire de l'Académie royale des sciences 1771 (Paris, 1774), 105-116.J L Greenberg, Alexis Fontaine's route to the calculus of several variables, Historia Math. 11 (1) (1984), 22-38.
The symbol was introduced originally in 1770 by Nicolas de Condorcet, who used it for a partial differential, and adopted for the partial derivative by Adrien-Marie Legendre in 1786. [3] It represents a specialized cursive type of the letter d , just as the integral sign originates as a specialized type of a long s (first used in print by ...
Memoires in Histoire de l'Académie Royale des Sciences. 1783 Sur l'attraction des Sphéroïdes homogènes (work on Legendre polynomials) 1784 Recherches sur la figure des Planètes p. 370; 1785 Recherches d'analyse indéterminée p. 465 (work on number theory) 1786 Mémoire sur la manière de distinguer les Maxima des Minima dans le Calcul des ...
"Principe du maximum, inégalité de Harnack et unicité du probleme de Cauchy pour les opérateurs elliptiques dégénérés." In Annales de l'Institut Fourier, vol. 19, no. 1, pp. 277–304. 1969. with Pierre Schapira : "Propagation des singularités analytiques pour les solutions des équations aux dérivées partielles."
Poisson's equation Poisson–de Rham equation: Calculus Astrophysics: Siméon Denis Poisson Siméon Denis Poisson and Georges de Rham: Pople—Nesbet equations: Quantum Chemistry: John Pople and R. K. Nesbet: Prandtl–Glauert equation: Compressible flows: Ludwig Prandtl and Hermann Glauert: Price equation: Evolutionary dynamics, Evolutionary ...
In which case the equation can be derived using perturbation theory. In 1770, Joseph Louis Lagrange (1736–1813) published his power series solution of the implicit equation for v mentioned above. However, his solution used cumbersome series expansions of logarithms.
Higher algebra (for the Faculté des sciences de Paris ) Mathematical physics (for the Collège de France). Mémoire sur l'emploi des equations symboliques dans le calcul infinitésimal et dans le calcul aux différences finis CR Ac ad. Sci. Paris, t. XVII, 449–458 (1843) credited as originating the operational calculus.
While Rolle's forte was always Diophantine analysis, his most important work was a book on the algebra of equations, called Traité d'algèbre, published in 1690. In that book Rolle firmly established the notation for the n th root of a real number, and proved a polynomial version of the theorem that today bears his name.