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. . .
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2005
1[1].
, (), ( ).
( ) - , . , , , .
W () (). {w1, wn }, - ( ). , .
() . . , .
. , (w1=) (w1=). W=(,).
. W = {(, ), (,), (,), (,)}
. .
W= {(x,y), a<x<b, c<y<d}
, , W.
, , Æ.
.
, .
W , , . .
. ,
= + ( = ), , , . . = + | |
D = AB ( D = A B), , . . | |
\, , . . \ , | |
, , , . . ; .. = W\ , , . Ø. . , = Ø , ( = Ø). . = {2, 4, 6}. = {1, 3, 5} , . n 1, 2, , n, , .. |
|
|
1. =Ø 6. =
2. + = 7. Ø = Ø . ,
3. = 8 = + =
4. + = 9. =
5. + Ø = 10. = Ø
+ = + ; =
+ ( + ) = ( + ) + = + + ( ) = ( ) =