René Descartes discussed the problem briefly in 1643, in a letter to Princess Elisabeth of the Palatinate.
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By Thales' theorem, this is a right triangle with right angle at B. Let the length of A′B be cn, which we call the complement of sn; thus cn2+sn2 = (2r)2.
For contingent reasons having to do with the Inquisition, Descartes spoke of motion as both absolute and relative.
Cartesian Meditations: An Introduction to Phenomenology is a book by the philosopher Edmund Husserl, based on two two-hour lectures he gave at the Sorbonne, in the Amphithéatre Descartes on February 23 and 25, 1929.
He portrayed the revolution in ideas produced by Kant as being as important in its significnace as that produced by Descartes, Lavoisier and Copernicus.
He was appointed chief physician of the neurological center of the ninth French military region, located in the buildings of the Descartes high school in Tours.
The music varies from contemporary classical music to avant-rock: there is a string quartet ("String Quartet 1"), two works for small ensembles ("A Hollow Miracle" and "Palimpsest"), a piece for samples and multiple horns ("From Descartes' Dreams"), a piece for MIDI-instruments ("Numinous Pools for Mental Orchestra"), and an unrecorded Henry Cow number from 1976 ("Hold to the Zero Burn, Imagine").
Takens also established the result now known as the Takens' theorem, which shows how to reconstruct a dynamical system from an observed time-series.
Here he was introduced to the works of such contemporary thinkers as Descartes, Newton, and Leibniz.
For example, da Vinci, Michelangelo, Descartes, Benjamin Franklin, Goethe, and others with IQs in the mid 160s or above were superior in their versatility to those attaining lower scores, such as George Washington, Palestrina, or Philip Sheridan.
In 2010, one of the stolen items, a letter from Descartes to Father Marin Mersenne concerning the publication of “Meditations on First Philosophy”, was discovered in the library of Haverford College.
The term "henology" distinguishes the discipline that concerns The One, as in the philosophies of Plato and Plotinus, from disciplines that concern Being (as in Aristotle and Aquinas) and also from those that seek to understand Knowledge and Truth (as in Kant and Descartes).
He wrote also on Descartes, Leibniz, and Francis Bacon, and published from their works extracts in defence of religion.
He supports his views with relevant citations from the writings of eminent thinkers like Descartes, Spinoza, Kant, Locke, Berkeley and others.
Among other things, it considers how three great thinkers (Descartes, Newton and Freud) changed our world view.
Osler compares the epistemology of Walter Charleton (working within the first tradition) with that of Descartes (working within the second).
Mathesis universalis (Greek μάθησις, mathesis "science or learning", Latin universalis "universal") is a hypothetical universal science modeled on mathematics envisaged by Descartes and Leibniz, among a number of more minor 16th and 17th century philosophers and mathematicians.
The French translation (by the Duke of Luynes with the supervision of Descartes) was published in 1647 as Méditations Metaphysiques.
For Mertens' results on the distribution of prime numbers, see Mertens' theorems.
He has published on medieval theology, Petrarch, humanism, Erasmus, Luther, Erasmus, Montaigne, Descartes, Kant, Hegel, Fichte, Schopenhauer, Nietzsche, Heidegger, American political thought, the relation between religion and politics, and the role of sports in human life.
In 1643 Descartes began a prolific written correspondence with Princess Elisabeth of Bohemia, in which he answered her moral questions, especially the nature of happiness, passions, and ethics.
On 6 November 2004, an air attack by Ivory Coast forces on the lycée Descartes at Bouaké killed nine French soldiers and one American civilian taking refuge in this site occupied by the groupement's Train de Combat N°2.
Voltaire compared the Hindu treatment of animals to how Europe's emperors & Popes treated even their fellow men, praising the former and heaping shame upon the latter; in the 17th century, Descartes, Pierre Gassendi, and Francis Bacon also advocated vegetarianism.
Identity studies by Descartes (I think therefore I am), followed by Freud (id, ego and super ego), Erikson (ego as an identity within a social reality), Goffman (dramaturgical theory), and Foucault (the materiality of technologies of the self) were essential theoretical precursors upon which the discipline of Technoself Studies was built.
The C.P.T. Theorem is the second album from rapper Greydon Square.
He built a good reputation in philosophic circles and in 1645 was chosen with Descartes, Gilles de Roberval and others, to referee the controversy between John Pell and Longomontanus over the problem of squaring the circle.
In March 2003 a French school, the College Descartes-Montaigne from Liévin near Lens, was due to send an exchange visit to the school, but this was cancelled due to all schools in the Pas-de-Calais department being told Britain was too dangerous to visit.