Geodesic
Square exponent of irrationality of $\ln 2$
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 1 (2012), pp. 25-30 
A. A. Polyanskii. Square exponent of irrationality of $\ln 2$. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 1 (2012), pp. 25-30. http://geodesic.mathdoc.fr/item/VMUMM_2012_1_a3/
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Voir la notice de l'article provenant de la source Math-Net.Ru

A new proof of the theorem on the non-quadraticity measure $\ln 2$ is given in the paper.

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