A constant used in numerical analysis, approximately equal to 0.577216. It represents the limit of the series 1 + 1/2 + 1/3 + 1/4 ... 1/n − ln n as n tends to infinity. It is not known whether this is a rational number or not.
- He investigated the series and calculated Euler's constant to 15 decimal places.
- In Adnotationes ad calculum integrale Euleri Mascheroni calculated Euler's constant to 32 decimal places.
- For example he computed Euler's constant to 1271 decimal places and published the result in 1962.
Mid 19th century: named after L. Euler (see Euler, Leonhard).
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