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- . R , R .

R - 71 - - dom (A). Oj = a (R) -

R , ,

%

dom {A)

( apb , (, 6) ? )

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. , .

R - 7Z X 71. R } nx (R), , , 71 , ,

'

' - . R (Ri) ^ 2 (^ 2). 7Z = 7 ^ i U 7? 2 - ' R R /? 2> R (7Z ), 7 ?, , ? R 2 # 2, r (^ i) - r i (7 ^) = 2 .

, # 2 (7 ^ 17 ^ 2 ) -.

7 ^! 7? 2 = 0, N R 2 - Ri i? 2 *

. 2 :

 
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