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  2. Principia Mathematica - Wikipedia

    en.wikipedia.org/wiki/Principia_Mathematica

    Sections 10, 11, 12: Properties of a variable extended to all individuals: section 10 introduces the notion of "a property" of a "variable". PM gives the example: φ is a function that indicates "is a Greek", and ψ indicates "is a man", and χ indicates "is a mortal" these functions then apply to a variable x.

  3. Philosophiæ Naturalis Principia Mathematica - Wikipedia

    en.wikipedia.org/wiki/Philosophiæ_Naturalis...

    Book 3 also considers the harmonic oscillator in three dimensions, and motion in arbitrary force laws. In Book 3 Newton also made clear his heliocentric view of the Solar System, modified in a somewhat modern way, since already in the mid-1680s he recognised the "deviation of the Sun" from the centre of gravity of the Solar System. [45]

  4. Condemnations of 1210–1277 - Wikipedia

    en.wikipedia.org/wiki/Condemnations_of_1210–1277

    The Condemnation of 1210 was issued by the provincial synod of Sens, which included the Bishop of Paris as a member (at the time Pierre II de la Chapelle []). [3] The writings of a number of medieval scholars were condemned, apparently for pantheism, and it was further stated that: "Neither the books of Aristotle on natural philosophy or their commentaries are to be read at Paris in public or ...

  5. Heads of Proposals - Wikipedia

    en.wikipedia.org/wiki/Heads_of_Proposals

    The main propositions were: Royalists had to wait five years before running for, or holding, an office. The Book of Common Prayer was allowed to be read but not mandatory, and no penalties should be made for not going to church, or attending other acts of worship. The sitting Parliament was to set a date for its own termination.

  6. Euclid's Elements - Wikipedia

    en.wikipedia.org/wiki/Euclid's_Elements

    The Elements (Ancient Greek: Στοιχεῖα Stoikheîa) is a mathematical treatise consisting of 13 books attributed to the ancient Greek mathematician Euclid c. 300 BC. It is a collection of definitions, postulates, propositions (theorems and constructions), and mathematical proofs of the propositions.

  7. On the Equilibrium of Planes - Wikipedia

    en.wikipedia.org/wiki/On_the_Equilibrium_of_Planes

    It contains ten propositions regarding the centre of gravity of parabolic segments exclusively, and examines these segments by substituting them with rectangles of equal area. This exchange is made possible by results obtained in Quadrature of the Parabola, a treatise believed to have been published after book one of On the Equilibrium of Planes.

  8. History of logic - Wikipedia

    en.wikipedia.org/wiki/History_of_logic

    The book presents a loosely Cartesian doctrine (that the proposition is a combining of ideas rather than terms, for example) within a framework that is broadly derived from Aristotelian and medieval term logic. Between 1664 and 1700, there were eight editions, and the book had considerable influence after that. [90]

  9. Archimedes - Wikipedia

    en.wikipedia.org/wiki/Archimedes

    There are two books to On the Equilibrium of Planes: the first contains seven postulates and fifteen propositions, while the second book contains ten propositions. In the first book, Archimedes proves the law of the lever, which states that: Magnitudes are in equilibrium at distances reciprocally proportional to their weights.