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  2. Coins in a fountain - Wikipedia

    en.wikipedia.org/wiki/Coins_in_a_fountain

    The above sequence show the number of ways in which n coins can be stacked. So, for example for 9 coins we have 45 different ways of stacking them in a fountain. The number (,) which is the solution for the above stated problem is then given by the coefficients of the polynomial of the following generating function:

  3. List of mathematical series - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_series

    List of mathematical series. This list of mathematical series contains formulae for finite and infinite sums. It can be used in conjunction with other tools for evaluating sums. is a Bernoulli polynomial. is an Euler number. is the Riemann zeta function. is the gamma function. is a polygamma function. is a polylogarithm.

  4. Quadratic formula - Wikipedia

    en.wikipedia.org/wiki/Quadratic_formula

    Quadratic formula. The roots of the quadratic function y = ⁠ 1 2 ⁠x2 − 3x + ⁠ 5 2 ⁠ are the places where the graph intersects the x -axis, the values x = 1 and x = 5. They can be found via the quadratic formula. In elementary algebra, the quadratic formula is a closed-form expression describing the solutions of a quadratic equation.

  5. Gagliardo–Nirenberg interpolation inequality - Wikipedia

    en.wikipedia.org/wiki/Gagliardo–Nirenberg...

    [1] [2] In the following year, both authors improved their results and published them independently. [3] [4] [5] Nonetheless, a complete proof of the inequality went missing in the literature for a long time. Indeed, to some extent, both original works of Gagliardo and Nirenberg do not contain a full and rigorous argument proving the result.

  6. Arithmetico-geometric sequence - Wikipedia

    en.wikipedia.org/wiki/Arithmetico-geometric_sequence

    v. t. e. In mathematics, an arithmetico-geometric sequence is the result of element-by-element multiplication of the elements of a geometric progression with the corresponding elements of an arithmetic progression. The n th element of an arithmetico-geometric sequence is the product of the n th element of an arithmetic sequence and the n th ...

  7. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

  8. DFRAC - Wikipedia

    en.wikipedia.org/wiki/DFRAC

    G-28, Hazrat Nizamuddin West, New Delhi, India. Website. https://dfrac.org. Digital Forensics, Research and Analytics Center better known as Dfrac.org or DFRAC[1] is an Indian non-profit fact checking website founded by Dr. Shujaat Ali Quadri as Editor and Prashant Tandon as Advisor in 2021. [2][3][4][5][6][7]

  9. Mathematical fallacy - Wikipedia

    en.wikipedia.org/wiki/Mathematical_fallacy

    In mathematics, certain kinds of mistaken proof are often exhibited, and sometimes collected, as illustrations of a concept called mathematical fallacy.There is a distinction between a simple mistake and a mathematical fallacy in a proof, in that a mistake in a proof leads to an invalid proof while in the best-known examples of mathematical fallacies there is some element of concealment or ...