# Thread: Argument activity and norm of a function

1. ## Argument activity and norm of a function

Hi
How can we find the norm of the function, x1.x2 + x2.x3
Also, how to calculate the activity of the argument x2 in this ?

Thanks & Regards,
RT

2. ## Re: Argument activity and norm of a function

Hello and welcome to the forum.

Could you provide more context? What is "."? What are the domain and the codomain of this function? What subject is this?

3. ## Re: Argument activity and norm of a function

Thank you.

This is a boolean function.
y = x1.x2 + x2.x3
+ OR
. AND

(x1,x2,x3 ) = (0,0,0) ; y = 0
(x1,x2,x3 ) = (0,1,1) ; y = 1

- RT

4. ## Re: Argument activity and norm of a function

And I got this question, from a website and this is categorized as "discrete mathematics and theory of combinations"

5. ## Re: Argument activity and norm of a function

Sorry, I have not encountered the terms "norm" and "activity" in reference to Boolean functions. Do you have the definitions or references?