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  2. The Sum of All Fears - Wikipedia

    en.wikipedia.org/wiki/The_Sum_of_All_Fears

    The Sum of All Fears is a political thriller novel, written by Tom Clancy and released on August 14, 1991, as the sequel to Clear and Present Danger (1989). Main character Jack Ryan, who is now the Deputy Director of Central Intelligence, tries to stop a crisis concerning the Middle East peace process wherein Palestinian and former East German terrorists conspire to bring the United States and ...

  3. The Sum of All Fears (film) - Wikipedia

    en.wikipedia.org/wiki/The_Sum_of_All_Fears_(film)

    The Sum of All Fears. (film) The Sum of All Fears is a 2002 American spy thriller film directed by Phil Alden Robinson, based on Tom Clancy 's 1991 novel of the same name. The film, which is set in the Jack Ryan film series, is a reboot taking place in 2002. Jack Ryan is portrayed as a younger character by Ben Affleck, in comparison with the ...

  4. Summation - Wikipedia

    en.wikipedia.org/wiki/Summation

    t. e. In mathematics, summation is the addition of a sequence of numbers, called addends or summands; the result is their sum or total. Beside numbers, other types of values can be summed as well: functions, vectors, matrices, polynomials and, in general, elements of any type of mathematical objects on which an operation denoted "+" is defined.

  5. Geometric series - Wikipedia

    en.wikipedia.org/wiki/Geometric_series

    In mathematics, a geometric series is the sum of an infinite number of terms that have a constant ratio between successive terms. For example, the series. is geometric, because each successive term can be obtained by multiplying the previous term by .

  6. Missing dollar riddle - Wikipedia

    en.wikipedia.org/wiki/Missing_dollar_riddle

    The misdirection in this riddle is in the second half of the description, where unrelated amounts are added together and the person to whom the riddle is posed assumes those amounts should add up to 30, and is then surprised when they do not ⁠— ⁠there is, in fact, no reason why the (10 ⁠− ⁠1) ⁠× ⁠3 ⁠ + ⁠2 ⁠ = ⁠29 sum should add up to 30.

  7. Goldbach's conjecture - Wikipedia

    en.wikipedia.org/wiki/Goldbach's_conjecture

    Goldbach's conjecture is one of the oldest and best-known unsolved problems in number theory and all of mathematics. It states that every even natural number greater than 2 is the sum of two prime numbers .

  8. Telescoping series - Wikipedia

    en.wikipedia.org/wiki/Telescoping_series

    Telescoping series. In mathematics, a telescoping series is a series whose general term is of the form , i.e. the difference of two consecutive terms of a sequence . [ 1] As a consequence the partial sums only consists of two terms of after cancellation. [ 2][ 3] The cancellation technique, with part of each term cancelling with part of the ...

  9. Sum of Logic - Wikipedia

    en.wikipedia.org/wiki/Sum_of_Logic

    Sum of Logic. The Summa Logicae ("Sum of Logic") is a textbook on logic by William of Ockham. It was written around 1323. Systematically, it resembles other works of medieval logic, organised under the basic headings of the Aristotelian Predicables, Categories, terms, propositions, and syllogisms.