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  2. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    The entire fraction may be expressed as a single composition, in which case it is hyphenated, or as a number of fractions with a numerator of one, in which case they are not. (For example, two-fifths is the fraction2 / 5 ⁠ and two fifths is the same fraction understood as 2 instances of ⁠ 1 / 5 ⁠.) Fractions should always be ...

  3. JanSport - Wikipedia

    en.wikipedia.org/wiki/JanSport

    JanSport is an American brand of backpacks and collegiate apparel, now owned by VF Corporation, one of the world's largest apparel companies. [1] JanSport is the world's largest backpack maker. Nearly half of all small backpacks sold in the United States are produced by JanSport and its sister brand The North Face, also owned by VF Corporation. [2]

  4. List of Indian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Indian_inventions...

    [188] [189] Later, the 6th-century astronomer Varahamihira discovered a few basic trigonometric formulas and identities, such as sin^2(x) + cos^2(x) = 1. [ 190 ] Mean value theorem – A special case of this theorem for inverse interpolation of the sine was first described by Parameshvara (1380–1460), from the Kerala School of Astronomy and ...

  5. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    A number-line visualization of the algebraic addition 2 + 4 = 6. A "jump" that has a distance of 2 followed by another that is long as 4, is the same as a translation by 6. A number-line visualization of the unary addition 2 + 4 = 6. A translation by 4 is equivalent to four translations by 1.

  6. Denim - Wikipedia

    en.wikipedia.org/wiki/Denim

    Denim fabric dyed with indigo Denim fabric dyed with indigo and black dyes and made into a shirt. Denim is a sturdy cotton warp-faced [1] textile in which the weft passes under two or more warp threads. This twill weave produces a diagonal ribbing that distinguishes it from cotton duck. Denim, as it is recognized today, was first produced in ...

  7. Fractional calculus - Wikipedia

    en.wikipedia.org/wiki/Fractional_calculus

    [5] [6] [7] Oliver Heaviside introduced the practical use of fractional differential operators in electrical transmission line analysis circa 1890. [8] The theory and applications of fractional calculus expanded greatly over the 19th and 20th centuries, and numerous contributors have given different definitions for fractional derivatives and ...