6 VI .
, .
1. > 1, , .
. , , , , , 1 = . , , :
.
, , , (. 6 VI), 1 = ( +1) = + . , = .
, ,
) = > 1;
) a 1 = = 1;
) a 0 = 0 = 0.
- . . . = { , , } = { , }. , .
(, ), (, ),
(, ), (, ),
(, ), (, ).
, . . , 2 + 2 + 2 = 6. n () = 3, n () = 2, 3 2 = 6. , .
2. . , n ( × ) = n () n ().
. = { 1, 2,..., q }, = { l, 2, 3,..., k }, k > l. × :
( 1, l), ( 1, 2), ( 1, 3),..., ( 1, k),
( 2, 1), ( 2, 2), ( 2, 3),..., ( 2, k)
(q, 1), (q, 2), (q, 3),..., (q, k).
k, .. (a 1, i), 1 ≤ i ≤ k .. q k. .
q , k, k q. , n ( × ) = k q = n () n (). k = 1, q 1 = q.
k = 0 = Æ, q 0 = 0.
:
1. . (" a, Î N 0)[ a = ].
× ~ × , n ( × ) = n ( × ).
2. . (" a, , Î N 0) [(a ) = ( )].
( × ) × ~ × ( × ) Þ n (( × ) × ) = n ( × ( × )).
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3. .
(" a, , Î N 0) [( + ) = + ].
(A B) × C ~ (A × C) (B × C),
n ((A B) × C) = n ((A × C) (B × C)).