Algebra Évariste Galois

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^ letter, p. 410
^ letter, p. 411
^ wilson, robert a. (2009). chapter 1: introduction . finite simple groups. graduate texts in mathematics 251. 251. berlin, new york: springer-verlag. doi:10.1007/978-1-84800-988-2. isbn 978-1-84800-987-5. zbl 1203.20012, 2007 preprint 
^ letter, pp. 411–412
^ galois last letter, translated