Osnovy teorii Galua.

~1. LJuicutecicue u OeyvLeHnble ypaenenus 103
X1 + x2 + XS 0,
X PS X2 + 7x3= Jf- q + B/3D,
~~~~~~~~~~~
CKmaIbIBaiq 9TH 4)opmynbi H.Iej1iq Ha 3, nojiyqae~i
7~ 33
(1.11o) XIx7 m -2=7
2UIH iTO -erKOHHbi MJypa 6eHum BbIpB}KHM TenepXb S X1,...eHHXM ypaBe
= eH BCHJ 'e'oH1M eCO
J-lpnoorlyTIm, jIO paa-a pabiiaralcno Ha BbiLLH0 Mb<bI HTOJUHOimb:
xro Kpeb Tex).gHx, He H43aMHO T OT1, emoeC6lb aRba
r Wieso en. OpaHHHM~rH Co~otbl~ BblpaeHbI, TawlOJ e,,.y'414MX,r~
13 iny CHerIYetb HmeeT y eCTM:
(MenYCTMl, e in), x, - a pmaraeTCA3LwHaJb~ paucoIa.bkbieeM: HHMM
Xm - ==(X)g(X, H~ae nauxrlC +m.b~
f~~~x)~ = +X-P"X)(Xb-avX) '...( -
ro1Jey m CJI-Ba, O OTHOCJ4TSIHO a. ~TaK, yarnieue (1u.11 B3eaqpBO(1M.12