Geodesic
Two-side estimates of the number of fixed points of a discrete logarithm
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 3 (2012), pp. 3-8 
E. A. Grechnikov. Two-side estimates of the number of fixed points of a discrete logarithm. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 3 (2012), pp. 3-8. http://geodesic.mathdoc.fr/item/VMUMM_2012_3_a0/
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Voir la notice de l'article provenant de la source Math-Net.Ru

Lower and upper bounds are obtained for an average number of solutions of the congruence $g^x\equiv x\pmod p$ in nonnegative integer numbers $x\le p-1$, where $g$ is a primitive root modulo $p$.

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