# HELP: Stable sum and messurable space

1. Oct 9, 2006

### Hummingbird25

Hi

I some need of urgent assistance to show the following:

$$m(\epsilon)$$ is stable under a countable sum.

Please can somebody explain this to me?

You Guys are my only hope !

Sincerely Yours Hummingbird25

Last edited: Oct 9, 2006
2. Oct 9, 2006

### AKG

There really are such things as bad questions.

3. Oct 9, 2006

### Hummingbird25

Excuse me ?

What do I need to rephrase ?

Sincerley Hummingbird

4. Oct 9, 2006

### Hummingbird25

m is messure defined m: \epsilon \rightarrow R_+

where R_+ is the set for all positive real numbers !

Sincerley Yours
Hummingbird

5. Oct 9, 2006

### StatusX

What do you mean by "stable under a countable sum"?

6. Oct 9, 2006

### Hummingbird25

I was hoping that you could help define. I have an idear that its about a sequence of sets which \epsilon is defined upon, but I'm not sure.

Any idears ??

Sincerely

Hummingbird

7. Oct 9, 2006

### StatusX

What? Where did you get this question? Exactly what did it say? What you said in the last post made no sense.