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  2. Magic circle (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Magic_circle_(mathematics)

    64 numbers (1–64) are arranged in eight circles, each with eight numbers; each circle sums to 260. The total sum of all numbers is 2080 (=8×260). The circles are arranged in a 3×3 square grid with the center area open in a way that also makes the horizontal / vertical sum along the central columns and rows is 260, and the total sum of the ...

  3. Euler's identity - Wikipedia

    en.wikipedia.org/wiki/Euler's_identity

    Euler's identity is considered to be an exemplar of mathematical beauty as it shows a profound connection between the most fundamental numbers in mathematics. In addition, it is directly used in a proof [ 3 ] [ 4 ] that π is transcendental , which implies the impossibility of squaring the circle .

  4. Transcendental number - Wikipedia

    en.wikipedia.org/wiki/Transcendental_number

    In mathematics, a transcendental number is a real or ... the n th digit of this number is 1 only if n is one of the numbers 1 ... for example squaring the circle.

  5. Circle group - Wikipedia

    en.wikipedia.org/wiki/Circle_group

    In mathematics, the circle group, denoted by or ⁠ ⁠, is the multiplicative group of all complex numbers with absolute value 1, that is, the unit circle in the complex plane or simply the unit complex numbers [1] = {: | | =}.

  6. Circle - Wikipedia

    en.wikipedia.org/wiki/Circle

    In mathematics, the study of the circle has ... the radius is denoted and required to be a positive number. A circle with = is a ... A circle of radius 1 ...

  7. Gauss circle problem - Wikipedia

    en.wikipedia.org/wiki/Gauss_circle_problem

    In mathematics, the Gauss circle problem is the problem of determining how many integer lattice ... 1, 5, 13, 29, 49 ... is defined as the number of ways of ...

  8. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]

  9. Borromean rings - Wikipedia

    en.wikipedia.org/wiki/Borromean_rings

    Another argument for the impossibility of circular realizations, by Helge Tverberg, uses inversive geometry to transform any three circles so that one of them becomes a line, making it easier to argue that the other two circles do not link with it to form the Borromean rings. [27] However, the Borromean rings can be realized using ellipses. [2]