

GIRARD (Albert)
New invention in algebra. Both for the solution of the equations, as well as for recognising the number of solutions they receive, with many things that are necessary for the perfection of this divine science. Amsterdam, Guillaume Jansson Blaeu, 1639. In-4, bradel green paperboard (modern binding). Original
edition
.
Important treatise on mathematics containing "one of the first exact formulations of the fundamental theorem of algebra" (Frédéric
Métin).
Albert Girard, a mathematician and little-known surveyor, was born in Lorraine around 1595 and was buried in 1632 in Holland where he spent most of his life. He was close to Stevin, from whom he gave two annotated editions of his mathematical works in 1625 and 1634, and was praised by his contemporaries, especially Huygens and
Leibnitz.
Girard undertook to give valid results for equations of all degrees, accepted negative roots and impossible roots, and distinguished several orders of writing equations (cf. Serfati & Descottes, Mathématiciens français du XVIIe siècle, PU Blaise Pascal, pp. 135-136
).
Handwritten ex-libris of the Convent of the Minimes of Paris on
the title.
A few freckles and minor stains. Cartonboard rubs off on the dishes and the back.
New invention in algebra. Both for the solution of the equations, as well as for recognising the number of solutions they receive, with many things that are necessary for the perfection of this divine science. Amsterdam, Guillaume Jansson Blaeu, 1639. In-4, bradel green paperboard (modern binding). Original
edition
.
Important treatise on mathematics containing "one of the first exact formulations of the fundamental theorem of algebra" (Frédéric
Métin).
Albert Girard, a mathematician and little-known surveyor, was born in Lorraine around 1595 and was buried in 1632 in Holland where he spent most of his life. He was close to Stevin, from whom he gave two annotated editions of his mathematical works in 1625 and 1634, and was praised by his contemporaries, especially Huygens and
Leibnitz.
Girard undertook to give valid results for equations of all degrees, accepted negative roots and impossible roots, and distinguished several orders of writing equations (cf. Serfati & Descottes, Mathématiciens français du XVIIe siècle, PU Blaise Pascal, pp. 135-136
).
Handwritten ex-libris of the Convent of the Minimes of Paris on
the title.
A few freckles and minor stains. Cartonboard rubs off on the dishes and the back.
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