product-conserving function

noun
UK /ˈprɒdʌkt kənˈsɜːvɪŋ ˈfʌŋkʃən/
US /ˈprɑːdʌkt kənˈsɜːrvɪŋ ˈfʌŋkʃən/

A product-conserving function is a math rule that keeps the answer the same when you multiply things together.

The teacher showed that multiplication by one is a product-conserving function because the product never changes.


OTHER MEANINGS

2. In algebra, a map between structures that sends products to products.

The function f(x) = 2x is product-conserving because f(ab) equals f(a)f(b).

3. A rule in arithmetic that leaves the result of a multiplication unchanged.

Adding zero is not product-conserving, but multiplying by one is.

4. A transformation that preserves the multiplication operation between two sets.

Students learned that a product-conserving function respects how numbers combine.