- #1

alexcc11

- 21

- 0

## Homework Statement

-∏<arg(z)<∏ (z≠0)

## Homework Equations

arg(z) is the angle from y=0

## The Attempt at a Solution

Arg(z) spans the entire graph since -pi to pi is the full 360 degrees so I put:

-∏<arg(z)<∏ -->

0<arg(z)<2∏+k∏, (k ε Z) -->

arg(z) [itex]\subset[/itex] R -->

arg(z) = R: all real numbers

but I don't know if that describes the closure since last time when describing the closure it would be Cl(E)={zεC :-∏<arg(z)<∏}

Would what I did be showing the closure with formulas? Also it's an open set, so I thought it would be an interior as oppose to a closure.