Geodesic
Solvability by Real Radicals and Fermat Primes
Canadian mathematical bulletin, Tome 47 (2004) no. 2, pp. 229-236

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DOI

We give a survey of old and new results concerning the expressibility of the real roots of a solvable polynomial over a real number field by real radicals. A characterization of Fermat primes is obtained in terms of solvability by real radicals for certain ploynomials.
DOI : 10.4153/CMB-2004-022-9
Mots-clés : 12E05, 12F10 
Jensen, C. U. Solvability by Real Radicals and Fermat Primes. Canadian mathematical bulletin, Tome 47 (2004) no. 2, pp. 229-236. doi: 10.4153/CMB-2004-022-9
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     author = {Jensen, C. U.},
     title = {Solvability by {Real} {Radicals} and {Fermat} {Primes}},
     journal = {Canadian mathematical bulletin},
     pages = {229--236},
     year = {2004},
     volume = {47},
     number = {2},
     doi = {10.4153/CMB-2004-022-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-022-9/}
}
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