# Homework Help: Question of real number

1. Sep 11, 2011

### peace-Econ

If an arbitrary unbounded set + another arbitrary unbounded set, is it also gonna be an unbounded set?

2. Sep 11, 2011

### ArcanaNoir

Sounds reasonable.

3. Sep 11, 2011

### LCKurtz

What does a set + another set mean? Do you mean the sets have real numbers and

A+B = {x+y| x ε A and y ε B}

or something else?