
We present a shortcut to the familiar characterizations of finite Galois extensions, based on an idea from an earlier Monthly note by Sonn and Zassenhaus.
2 pages; to appear in Amer. Math. Monthly (2014)
Mathematics - Number Theory, 12F10, Mathematics - History and Overview, History and Overview (math.HO), FOS: Mathematics, Number Theory (math.NT)
Mathematics - Number Theory, 12F10, Mathematics - History and Overview, History and Overview (math.HO), FOS: Mathematics, Number Theory (math.NT)
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