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16. .

(, , ), . , ( , , , ).

, . . 1947 . .

z (. 33). , . , , .

. 33.

, (16.1) , z .

.

(16.3) (16.2), ,

0 .

, (16.5) . (16.4) (16.5) .

, .

[-, ]. (16.6)

(16.7) 0. 0 , , 0 .

(16.7) (16.4) (16.5),

, (16.1) (16.7).

:

(16.10)

(16.10) (16.5).

(16.5) :

(16.10) (16.12),

(16.13) , . , . (16.13) (16.11),

,

( 0 .)

(16.16)

(16.17)

( (16.14) , ).

(16.14)

(16.18)

(16.18) . (16.15) . (16.2) , . .

(16.19)

, .

, (16.1),

(16.17) (16.18). (16.20), , , . .

, . . ,

. ( )

, . . , , , , .

. . ( ). ):

(16.21)

(16.21)

(16.22)

, (16.21) (16.22).

(16.21) (16.22),

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