(        3).2.               (
3     3  (  ) =   , (   )  ( 2)=  1   2,  _
( ( )-  )   3       ( ( )- ))
( | )= (  )  ( ), (   | )=( ( )   ( ))  (  ).  (  ,
,  ,  )=(  1  3)( 2   4)/( 1  4) ( 2  3). 3       3  3
.          ,         ( | ) - '    ,
_            _          3) .    3   3
-      3 ,19 95)      ,        ,      3
. .,       .,         . ., ( ,  )= ` - `   ` =0, = `
3    3      , 3               .,
.       3      3           -( 1,  2, 3, 4)      _
3   3 3    3    .      ,            3        3
3    .       ,               3
.- .,           .,          . .,       .,   ,    _
3     .                 3  3 ,       =3
__      3      ,   3  -   ,        3
3              3 (  ,       _,
.- 3      3)           3
//     .    . 85-112.82- 96.9.
3       ,       -
3-                  -       3     3
)  ( )= ,   ( )=   ,     .    .- 1991.- .32 .-111.- .2
3          _          -        3 3
.    3         3      -      3          3
.         ,        -   (  ,  )=     (  ,
3           3   2'2       3   -        3
3        3       -              -      3
3     -    -         3
,          -       -      3 -   3
3                     ,5-     -           .
//  -15.        . .    =2
=                 -    21.        .
3      3  ,            _     3.        .
_           _9.             3
3             _   3   _ 3   -9.        .
.         3         __
959-2965.     .    .- 1996.- .7. -13-4.- .2 35-261. =1
. .,    3 _. .,          . . ,   3    .  .,
_         3  _    3     3     .        - 3  3
3      3    3   .     -           3
3            -     ( , )=0.            ( , )=0
3  3                 3      .        -            3
3      (    )1/ 2 3 3
/ / .30 .(         /
(    )(2-  )/ ,   (`  / )=    /     .    =     +    .
:1996.-                      //
3            3           3.   / 2               -
.(         ,       ,1995)(1 |1)- 3
3 0197  016494).1 .
3               3  ,       -1 .
-11.            =1                   3
.    .   .-1 996.- .106 .-13.- .35
/               .-199 7.- .54.-1 2.-                .-
)    3    3  3           3  3      ,   (
3).1.               3 _
(          3).3.            3    3                (
3 3         -         3,  3                     ,
-                            3                    3
-    ,                 3   =1
-   3              3    3
-743. .253 -260.    . -1996.- .3 7.-13.- .3 85-396. (
3  .                           3     3-
3          3                 .
3           - 3      3 ,
-            3            .   3    3                _
3                         3  -       ,         3
3        3           3
.-1998 .-12.- .    -       3
3     3      - 3
-      _.                    3 3            3   :-
3             3 3     3       . 3
3            3  3           3       3            3
. 3           , 3     3   ,  3 3      3. 3     3
-  3        3 _
,    3  3   3
-                     3       3        3      3
(  )                   3   3 3           ( ).
3 3    3 3
3           .       3      3
3            3          ,  -   3        3      3
3                3           3 .  3         3
3              3           3 .   3           3
.       3  3     _    3    ,
-                  ,           3                    _
,                 _    3            ,
3                 3        3       3       3
3      -     3.     3         3  .      .-1
-                        3      3            ,
.  .   .      .     . -1990.- .3 3.- .22-38 .
3           3     3 - 3
3 3-               3   _        3   (   )
3                        3    3    -              3
3                3      3          3
3              .  3   3                    3
3     3      3       ,
3           3                  3
3  3          3  3  3   _3   3  3         3
3            3    -             3
3
3               +(  1, 2, 3, 4 ),          3      3-