____________________________________
( ) ________________
___________________________________________ ________________
5
1.
1. , () () .
2. .
2.
3. :
. .-.;
. .-.̳;
. .-.;
.
4. , :
a↔b;
a b;
a b;
a→b.
5. :
;
;
;
.
Գ
__ _______________ 20__ .
__________________ ..., . . .
̲Ͳ ²