Geodesic
Uniqueness of Subfields
Canadian mathematical bulletin, Tome 29 (1986) no. 2, pp. 191-196

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DOI

Let L be a finitely generated field extension of a field K. The order of inseparability of L/K is the minimum of {n|[L:S] = pn where S is a separable extension of K}. If V is a subfield of L/K, then its order of inseparability is less than or equal to that of L/K. This paper examines the question of when there are unique minimal subfields of order of inseparability n — j, 0 ≤ j ≤ n.
DOI : 10.4153/CMB-1986-031-5
Mots-clés : 12F15 
Deveney, James K.; Mordeson, John N. Uniqueness of Subfields. Canadian mathematical bulletin, Tome 29 (1986) no. 2, pp. 191-196. doi: 10.4153/CMB-1986-031-5
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     title = {Uniqueness of {Subfields}},
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     doi = {10.4153/CMB-1986-031-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-031-5/}
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