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  2. Pisano period - Wikipedia

    en.wikipedia.org/wiki/Pisano_period

    Plot of the first 10,000 Pisano periods. In number theory, the nth Pisano period, written as π (n), is the period with which the sequence of Fibonacci numbers taken modulo n repeats.

  3. Mothball - Wikipedia

    en.wikipedia.org/wiki/Mothball

    [10] [11] In addition to their cancer risks, mothballs are known to cause liver and kidney damage. [1] 1,4-Dichlorobenzene is a neurotoxin. It has been abused as an inhalant, causing a variety of neurotoxic effects. [12] [13] Mothballs containing naphthalene have been banned within the EU since 2008. [14] [15]

  4. Prime number - Wikipedia

    en.wikipedia.org/wiki/Prime_number

    A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself. However, 4 is composite because it is a ...

  5. Elizabeth I - Wikipedia

    en.wikipedia.org/wiki/Elizabeth_I

    Elizabeth I (7 September 1533 – 24 March 1603) [a] was Queen of England and Ireland from 17 November 1558 until her death in 1603. She was the last monarch of the House of Tudor.

  6. Sum of two squares theorem - Wikipedia

    en.wikipedia.org/wiki/Sum_of_two_squares_theorem

    The prime decomposition of the number 2450 is given by 2450 = 2 · 5 2 · 7 2. Of the primes occurring in this decomposition, 2, 5, and 7, only 7 is congruent to 3 modulo 4. Its exponent in the decomposition, 2, is even. Therefore, the theorem states that it is expressible as the sum of two squares. Indeed, 2450 = 7 2 + 49 2.

  7. Polynomial remainder theorem - Wikipedia

    en.wikipedia.org/wiki/Polynomial_remainder_theorem

    In algebra, the polynomial remainder theorem or little Bézout's theorem (named after Étienne Bézout) [1] is an application of Euclidean division of polynomials.It states that, for every number , any polynomial is the sum of () and the product by of a polynomial in of degree less than the degree of .

  8. Chinese remainder theorem - Wikipedia

    en.wikipedia.org/wiki/Chinese_remainder_theorem

    Sunzi's original formulation: x ≡ 2 (mod 3) ≡ 3 (mod 5) ≡ 2 (mod 7) with the solution x = 23 + 105k, with k an integer In mathematics, the Chinese remainder theorem states that if one knows the remainders of the Euclidean division of an integer n by several integers, then one can determine uniquely the remainder of the division of n by the product of these integers, under the condition ...

  9. Ten percent of the brain myth - Wikipedia

    en.wikipedia.org/wiki/Ten_percent_of_the_brain_myth

    [5] The concept gained currency by circulating within the self-help movement of the 1920s; for example, the book Mind Myths: Exploring Popular Assumptions About the Mind and Brain includes a chapter on the 10% myth that shows a self-help advertisement from the 1929 World Almanac with the line "There is NO LIMIT to what the human brain can ...