. , .
:
( ~ , n () = , n () = )Þ = .
n () = n () = : .
.
1. (" a Î N 0) [ = ] .
2. (" a, Î N 0) [ a = => = ] .
3. (" a, , Î N 0) [ a = Ù = Þ = ] .
.
, , .
. , < , ~ 1, 1 Ì n () = , n () = .
, , > .
. - , , 2 < 5.
. 2 = { , }, 5 = { , m, n, l, }, .. 2 = n (), 5 = n (). 1 = { m, n } . , , 1 Ì . ,
n () < n(), .. 2 < 5.
.
1. ( Î N 0) [ a < a ] .
= n (). .. , , .. Ì , < .
2. (" a, Î N 0)[ a < ≠> < a ] .
< ~ 1 Ì , = n (), = n (), . 1. A Ì B. , < , , , . < .
3. (" a, , c Î N 0) [ a < Ù < c Þ a < c ] . .
1. - , , , + = .
2. - , :
) 48 30; )12 5; ) (17 2) 5;
) 84 (70 16); ) 24 + (76 28).
3. , , , :
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) 3 4 = 12; ) 4 1 = 4; ) 4 0 = 0.
4. :
6 4 , . ?
5. - : 15 = 7 2 + 1.
- . . .