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, p, q Î N, , , , .

.

+ q = m (), = + , m () = , m () = q.

, (. 1).

 

 

. 1

+ q = n ( ), = Æ. n () = . n () = q.  
- 2.

B C

. q .

 

. 2

. .

.

q = m (), = + , m () = , m () = q.

, .

p q = n (A\B), Í , n (A) = p, n (B)= q.
- . 3.

 


. \

(? = )

. 3

.

p q = 1 (), 1 () = , e () = q, 1 (. 4).

 

 


. 4

, ( ) 1 .

- 5.

 


p q = n (A 1 A 2 ... Aq),

Ai Aj =Æ (ij).

n ( 1) = n ( 2) =... = n (Aq) = p.

. 5

.

1 . p: q = 1 (), () = , ( 1) = q; 1 (a) Î N, .. 1 (. 6).

2 . : q = ( 1), () = , 1(a) = q, me ( 1) Î N (. 7).

a . 6 a . 7

1 , q .

, ( ) 1, .

- 8, 9.

1 . , , q 1, 2,..., q, q .

: q = n, n . .. 1 .

 

. 8

2 . , , q 1, 2,..., q. : q = n, n .

.. 2 .

 

1. n ?

2. , ?





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