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Method of normals. In calculus, the method of normals was a technique invented by Descartes for finding normal and tangent lines to curves. It represented one of the earliest methods for constructing tangents to curves. The method hinges on the observation that the radius of a circle is always normal to the circle itself.
"Cogito and the History of Madness" is a 1963 paper by the French philosopher Jacques Derrida that critically responds to Michel Foucault's book History of Madness. In this paper, Derrida questions the intentions and feasibility of Foucault's book, particularly in relation to the historical importance attributed by Foucault to the treatment of madness by Descartes in the Meditations on First ...
Descartes on Polyhedra: A Study of the "De solidorum elementis" is a book in the history of mathematics, concerning the work of René Descartes on polyhedra.Central to the book is the disputed priority for Euler's polyhedral formula between Leonhard Euler, who published an explicit version of the formula, and Descartes, whose De solidorum elementis includes a result from which the formula is ...
Animal machine. Animal machine or bête-machine (Fr., animal-machine), is a philosophical notion from Descartes in the 17th century who held that animal behaviour can be compared to the one of machines. Like them, animals would be an assembly of mechanical pieces and therefore unable to think and not gifted of consciousness, although they ...
René Descartes. The causal adequacy principle ( CAP ), or causal reality principle, is a philosophical claim made by René Descartes that the cause of an object must contain at least as much reality as the object itself, whether formally or eminently.
The Latin cogito, ergo sum, usually translated into English as "I think, therefore I am", is the "first principle" of René Descartes's philosophy. He originally published it in French as je pense, donc je suis in his 1637 Discourse on the Method, so as to reach a wider audience than Latin would have allowed.
Sesenne. Dame Marie Selipha Descartes, DBE, SLMM, BEM (née Charlery; 28 March 1914 – 11 August 2010), best known as Sesenne, was a Saint Lucian singer and cultural icon. Singing in her native patois language, at a time when authorities barred its use, Sesenne developed a wide following in the rural area in which she grew up.
Elisabeth of the Palatinate (German: Elisabeth von der Pfalz; 26 December 1618 – 11 February 1680), also known as Elisabeth of Bohemia (Elisabeth von Böhmen), Princess Elisabeth of the Palatinate, or Princess-Abbess of Herford Abbey, was the eldest daughter of Frederick V, Elector Palatine (who was briefly King of Bohemia), and Elizabeth Stuart.