Decimal numeration system and Positional representation system

Decimal numeration system noun - A positional system of numeration that uses decimal digits and a base of ten.

Positional representation system and decimal numeration system are semantically related. In some cases you can use "Positional representation system" instead a noun phrase "Decimal numeration system".

Positional representation system noun - A numeration system in which a real number is represented by an ordered set of characters where the value of a character depends on its position.

Decimal numeration system and positional representation system are semantically related. Sometimes you can replace phrase "Decimal numeration system" with "Positional representation system", this phrases are similar.