- #1

kathrynag

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## Homework Statement

Prove that either [tex][a]_{n}[/tex][tex]\cap[/tex][tex]

**_{n}[/tex]=empty set or [tex][a]_{n}[/tex]=[tex]**

**_{n}[/tex].**

I want to assume there is an element x in [tex][a]_{n}[/tex][tex]\cap[/tex][tex]## Homework Equations

## The Attempt at a Solution

I want to assume there is an element x in [tex][a]_{n}[/tex][tex]\cap[/tex][tex]

**_{n}[/tex] and show this implies [tex][a]_{n}[/tex]=[tex]****_{n}[/tex].**

This tells me x is in [tex][a]_{n}[/tex] and [tex]This tells me x is in [tex][a]_{n}[/tex] and [tex]

**_{n}[/tex].**

That's where I get stuck.That's where I get stuck.

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