Galois group of x^4-2x^3-8x-3
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Galois group of x^4+x+2 over F_3
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Galois group of x^4-20x^2+80
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Galois group of R over Q
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Grupo de Galois de una ecuación bicuadrada
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But why is there no quintic formula? | Galois Theory
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Évariste Galois: The Greatest Loss of Mathematics
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the impossible integral of e^(-x^2) & the error function
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