( , , , , . .
.
, , .
.
.
. l S, , (l1 h1), a (l2 f2) S.
: l, D (D1, D2) ∑ (A,B,) ( 2.47).
: h ƒ S l 1 h 1, l 2 ƒ2.
l S, (h f), , l 1 h 1 l 2 ƒ2 l S.
: Θ, (1,2) l (l1, l2) ( 2.45).
:
1 f2 l2, f2 C2.
2 ƒ1 C1C2, ƒ1 C1
3 h2 C1C2, h2 C2
4 4 .h1 l 1, h 1 CI.
5 Θ (h Ç f).
, l h f. .
2.46 | 2.47 |
, . , . , (1,2) h(h1,h2) ( 2.48) 1 h1, () .
A (A1,A2) BC (B1C1, 1C2) ( 2.49).
1 (1,2) (hǃ), BC(B1C1, 22), h ƒ, : h1 11 ƒ2 22.
2 (1, 2) (hǃ).
3 A (A1,A2) BC (B1C1, 22) A (A11, 22) .
. 2.49. . .
|
|
2.48 | 2.49 |
, .
: S(A,B,C) D(D1, D2) ( 2.50). .
:
1 l(l1, l2) D(D1, D2) S (A,B,C): l1 h1; l2 f2.
2 (1, 2) l (l1, l2) S (A,B,C).
3 D(D1, D2) , [DK]. , , . .
2.50