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16.6.

, () , . , , .

(16.23)

, , .

- .

-

(16.24)

(16.24) , (16.23) , z- . (. 16.12):

, , , , .

. 16.12.

, (16.24), , .

(16.24) , , (16.20) z-, z .

(16.25)

, (16.24) :

(16.26)

(16.26) , . .

, .

(16.26),

(16.27)

. 16.13.

(16.20), (16.25) -(16.27)

(16.28)

, , , .

. 16.13. (16.27);

(16.25),

,

(16.28),

, . .,

. 16.14. .

. , , . , . . .

. 16.14.

. 16.15.

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