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  2. Irreducible fraction - Wikipedia

    en.wikipedia.org/wiki/Irreducible_fraction

    An irreducible fraction (or fraction in lowest terms, simplest form or reduced fraction) is a fraction in which the numerator and denominator are integers that have no other common divisors than 1 (and −1, when negative numbers are considered). [1]

  3. Numeral system - Wikipedia

    en.wikipedia.org/wiki/Numeral_system

    The simplest numeral system is the unary numeral system, in which every natural number is represented by a corresponding number of symbols. If the symbol / is chosen, for example, then the number seven would be represented by /////. Tally marks represent one such system still in common use.

  4. L10a140 link - Wikipedia

    en.wikipedia.org/wiki/L10a140_link

    David Swart, [5] and independently Rick Mabry and Laura McCormick, [6] discovered alternative 12-crossing visual representations of the L10a140 link. In these depictions, the link no longer has strictly alternating crossings (as it does in its simplest 10-crossing form), but there is greater superficial symmetry.

  5. 12/8 - Wikipedia

    en.wikipedia.org/wiki/12/8

    12/8 may refer to: December 8 (month-day date notation) 12 August (day-month date notation) 12 8, in sheet music, a time signature containing twelve quavers per ...

  6. 12 (number) - Wikipedia

    en.wikipedia.org/wiki/12_(number)

    12 (twelve) is the natural number following 11 and preceding 13.. Twelve is the 3rd superior highly composite number, [1] the 3rd colossally abundant number, [2] the 5th highly composite number, and is divisible by the numbers from 1 to 4, and 6, a large number of divisors comparatively.

  7. Scientific notation - Wikipedia

    en.wikipedia.org/wiki/Scientific_notation

    Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form, since to do so would require writing out an inconveniently long string of digits. It may be referred to as scientific form or standard index form, or standard form in the United Kingdom.

  8. Help:Displaying a formula - Wikipedia

    en.wikipedia.org/wiki/Help:Displaying_a_formula

    The text-only form of the LaTeX can be set via user preferences at My Preferences – Appearance – Math. The hidden MathML can be used by screen readers and other assistive technology. To display the MathML in Firefox: Install the Native MathML extension; Or copy its CSS rules to your Wikipedia user stylesheet.

  9. Modular form - Wikipedia

    en.wikipedia.org/wiki/Modular_form

    Then the modular discriminant Δ(z) = (2π) 12 η(z) 24 is a modular form of weight 12. The presence of 24 is related to the fact that the Leech lattice has 24 dimensions. A celebrated conjecture of Ramanujan asserted that when Δ( z ) is expanded as a power series in q, the coefficient of q p for any prime p has absolute value ≤ 2 p 11/2 .