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The Akhmim wooden tablet wrote fractions in the form 1/n in terms of sums of hekat rational numbers, 1/3, 1/7, 1/10, 1/11 and 1/13. In this document a two-part set of fractions was written in terms of Eye of Horus fractions which were fractions of the form 1 / 2 k and remainders expressed in terms of a unit called ro.
~2.7: The surface of Broccoli: San-Hoon Kim used a direct scanning method and a cross section analysis of a broccoli to conclude that the fractal dimension of it is ~2.7. [49] Measured ~2.8: Surface of human brain: Measured with segmented three-dimensional high-resolution magnetic resonance images [50] Measured and calculated ~2.8: Cauliflower
Pell's equation. Pell's equation for n = 2 and six of its integer solutions. Pell's equation, also called the Pell–Fermat equation, is any Diophantine equation of the form where n is a given positive nonsquare integer, and integer solutions are sought for x and y. In Cartesian coordinates, the equation is represented by a hyperbola; solutions ...
Fibonacci sequence. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn . The sequence commonly starts from 0 and 1, although some authors start the sequence from 1 and 1 or sometimes ...
Calculus. In mathematics, the harmonic series is the infinite series formed by summing all positive unit fractions : The first terms of the series sum to approximately , where is the natural logarithm and is the Euler–Mascheroni constant. Because the logarithm has arbitrarily large values, the harmonic series does not have a finite limit: it ...
Hilbert matrix. In linear algebra, a Hilbert matrix, introduced by Hilbert ( 1894 ), is a square matrix with entries being the unit fractions. For example, this is the 5 × 5 Hilbert matrix: The entries can also be defined by the integral. that is, as a Gramian matrix for powers of x. It arises in the least squares approximation of arbitrary ...
edit. Germanium ( 32 Ge) has five naturally occurring isotopes, 70 Ge, 72 Ge, 73 Ge, 74 Ge, and 76 Ge. Of these, 76 Ge is very slightly radioactive, decaying by double beta decay with a half-life of 1.78 × 10 21 years [ 4] (130 billion times the age of the universe ). Stable 74 Ge is the most common isotope, having a natural abundance of ...
When = + /, +, the Matérn covariance can be written as a product of an exponential and a polynomial of degree . [5] [6] The modified Bessel function of a fractional order is given by Equations 10.1.9 and 10.2.15 [7] as