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  2. Evil demon - Wikipedia

    en.wikipedia.org/wiki/Evil_demon

    The evil demon, also known as Descartes' demon, malicious demon and evil genius, is an epistemological concept that features prominently in Cartesian philosophy.In the first of his 1641 Meditations on First Philosophy, Descartes imagines that an evil demon, of "utmost power and cunning has employed all his energies in order to deceive me."

  3. Real-root isolation - Wikipedia

    en.wikipedia.org/wiki/Real-root_isolation

    Descartes' rule of signs and its generalizations. Descartes' rule of signs asserts that the difference between the number of sign variations in the sequence of the coefficients of a polynomial and the number of its positive real roots is a nonnegative even integer. It results that if this number of sign variations is zero, then the polynomial ...

  4. Principles of Philosophy - Wikipedia

    en.wikipedia.org/wiki/Principles_of_Philosophy

    Principles of Philosophy (Latin: Principia Philosophiae) is a book by René Descartes. In essence, it is a synthesis of the Discourse on Method and Meditations on First Philosophy. It was written in Latin, published in 1644 and dedicated to Elisabeth of Bohemia, with whom Descartes had a long

  5. First principle - Wikipedia

    en.wikipedia.org/wiki/First_principle

    Descartes. Profoundly influenced by Euclid, Descartes was a rationalist who invented the foundationalist system of philosophy. He used the method of doubt, now called Cartesian doubt, to systematically doubt everything he could possibly doubt until he was left with what he saw as purely indubitable truths. Using these self-evident propositions ...

  6. Momentum - Wikipedia

    en.wikipedia.org/wiki/Momentum

    René Descartes believed that the total "quantity of motion" (Latin: quantitas motus) in the universe is conserved, where the quantity of motion is understood as the product of size and speed. This should not be read as a statement of the modern law of momentum, since he had no concept of mass as distinct from weight and size, and more ...

  7. Lognes station - Wikipedia

    en.wikipedia.org/wiki/Lognes_station

    General information; Location: France: Coordinates: Coordinates: Owned by: RATP Group: Lognes is a railway station on RER train network in Lognes, Seine-et-Marne.