olemus
hulkade A ja B otsekorrutis AxB on
hulk, mis koosneb kõigist paaridest (a,b),
kus a on A element ja b on B element

Wiktionary:
direct product
1. (set theory) the set of all possible tuples whose elements are elements of given, separately specified, sets
If A and B are sets, their direct product is the set of ordered pairs (a,b) with a in A and b in B.

erijuht
A=B korral nimetatakse otseruuduks (direct square)

ülevaateid
https://www.encyclopediaofmath.org/index.php/Direct_product

vt ka
- algebrate otsekorrutis