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18.5.

18.5.1. .

, (18.69), - . 3 (. . 17.4.3), - ( ) :

(18.102)

-

(18.103)

, (18.47), f (17.30).

(18.104)

[. (17.66)],

(18.105)

.

, . .

[. (18.102)]

(18.106)

, (. . 13.1.2): ,

(18.107 )

,

(18.1076)

y

(18.108)

18.5.2. .

, . 18.8. [. (18.103)]. . . 18.9. (18.103).

18.5.3. .

, D. (. [18, . 172]),

(18.109)

(18.109 )

,

(18.110)

(18.111 )

(., , [58, . 478]), ,

(18.112)

I . (18.110)

(18.113)

.

18.5.4. .

(18.90), (18.91 -). [. (18.105)]

(18.1146)

[. (18.104)]

(18.116)

[. (18.103)]

(18.117 )

, [. (18.95)]

(18.118)

-, , coscp, (18.118)

(18.119)

(18.119) ,

-

(18.121)

(18.120).

, , , b [. (18.115 )]. (18.121) [. (18.99)]:

(18.122)

, , b. , - .

(18.123 )

[. (18.101)}

(18.123 )

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