# What does this notation mean?

1. Oct 21, 2012

### HasuChObe

$$f: ℝ^n→ℝ\qquad g: ℝ^n→ℝ^m$$

2. Oct 21, 2012

### dextercioby

Mappings or functions from a set to another set, and the sets are cartesian products of R 1, n and m times respectively.

3. Oct 22, 2012

### Akshay_Anti

if R is raised to power 2, it means R X R and the cartesian product. what about R power n? Plz explain....

Last edited: Oct 22, 2012
4. Oct 22, 2012

### Number Nine

The product of n copies of R, as dextercioby said.