O le 19th-seneturi Farani mathematician Évariste Galois, faalauteleina galuega muamua o Paolo Ruffini ma Joseph-Louis Lagrange, na tuuina mai ai se criterion mo le solvability o se faapitoa polynomial equation i tuutuuga o le vaega symmetry o lona aa (fofo). O le elemene o se vaega Galois e tusa ai ma nisi permutations o le aa. Muamua, na teena manatu a Galois e ona aso, ma na lomia na o posthumously. O le uunaiga uluai mo vaega sa suesueina faapitoa e C. Felix Cayley o le manatu o vaega, e faalagolago i luga o le faaupuga o vaega polynomial maualuga atu nai lo le 4. (1888) O le 19th-seneturi Farani mathematician Évariste Galois, faalauteleina galuega muamua o Paolo Ruffini ma Iosefa-Louis Lagrange, na tuuina mai se criterion mo le solvability o se faapitoa polynomial equation i tuutuuga o le vaega symmetry o lona aa (fofo). O le vaega muamua
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