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2026-09-08 10:06:15 UTC

MagicInternetMath on Nostr: 📖 Normal Basis For a normal extension $E/F$ with Galois group $G = \\{\\sigma_1, ...

📖 Normal Basis

For a normal extension $E/F$ with Galois group $G = \\{\\sigma_1, \\ldots, \\sigma_n\\}$, a normal basis is an element $\\theta \\in E$ such that $\\sigma_1(\\theta), \\ldots, \\sigma_n(\\theta)$ are linearly independent over $F$ (and hence form a basis).

From: gal-artin
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