:
- ;
- .
. , . , , , - .
. Δ (1) i i ′ (6.4). Δ (1). , 2 1 7 .
6.4
, . 0 (01; 02), . Rmin< R <Rmax. 0 1 (Rmax = 0212).
, . R h (h 2, h 1) n (n 1, n 2).
. h n 4 4', :
42(4′2) = h 2∩ n 2; 41(4′1)=42 41∩ h 1.
R Δ h′1 m, 3 3'. 32(3′2) = h ′2∩ m 2; 31(3′1)=32 31∩ h 1. 6 (6') 2 (2′).
2.
. , 2 . 1, 2′, 3′, 4′, 5′, 6′, 7- 1, 2, 3, 4, 5, 6, 7. 2 . - 1 7.
1 . Σ (Σ2) . , Σ, 1 , 4, 3, 2, 1, 2′, 3′,4′ , . 5 5'. 51, 61, 71, 6'1,5'1 . , .