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The area of the blue region converges to Euler's constant. Euler's constant (sometimes called the Euler–Mascheroni constant) is a mathematical constant, usually denoted by the lowercase Greek letter gamma (γ), defined as the limiting difference between the harmonic series and the natural logarithm, denoted here by log:
In number theory, a branch of mathematics, the Poussin proof is the proof of an identity related to the fractional part of a ratio.. In 1838, Peter Gustav Lejeune Dirichlet proved an approximate formula for the average number of divisors of all the numbers from 1 to n:
However, the priority for this result (now known as the Mohr–Mascheroni theorem) belongs to the Dane Georg Mohr, who had previously published a proof in 1672 in an obscure book, Euclides Danicus. In his Adnotationes ad calculum integralem Euleri (1790) he published a calculation of what is now known as the Euler–Mascheroni constant ...
There’s proof of an exact number for 3 dimensions, although that took until the 1950s. ... Meet the Euler-Mascheroni constant 𝛾, which is a lowercase Greek gamma. It’s a real number ...
The area of the blue region converges on the Euler–Mascheroni constant, which is the 0th Stieltjes constant. In mathematics , the Stieltjes constants are the numbers γ k {\displaystyle \gamma _{k}} that occur in the Laurent series expansion of the Riemann zeta function :
The Euler–Mascheroni constant γ: In 2010 it has been shown that an infinite list of Euler-Lehmer constants (which includes γ/4) contains at most one algebraic number. [51] [52] In 2012 it was shown that at least one of γ and the Gompertz constant δ is transcendental. [53]
Euler's product formula for the gamma function, combined with the functional equation and an identity for the Euler–Mascheroni constant, yields the following expression for the digamma function, valid in the complex plane outside the negative integers (Abramowitz and Stegun 6.3.16): [1]
where is the Euler–Mascheroni constant, exp(x) = e x is the exponential function, and Π denotes multiplication (capital pi notation). The integral representation, which may be deduced from the relation to the double gamma function, is