Geodesic
The Galois group of f(xr)
Glasgow mathematical journal, Tome 25 (1984) no. 1, pp. 75-91

Voir la notice de l'article provenant de la source Cambridge University Press

Let f(x) be an irreducible polynomial of degree n with coefficients in a field L and r be an integer prime to the characteristic of L. The object of this paper is to describe the galois group g of f(xr) over L when the galois group G of f(x) itself over L is either the full symmetric group Snor the alternating group An. We shall call f standard if G = Sn or An with |G|>2. 
Cohen, S. D.; Stothers, W. W. The Galois group of f(xr). Glasgow mathematical journal, Tome 25 (1984) no. 1, pp. 75-91. doi: 10.1017/S0017089500005449
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