Hello,(adsbygoogle = window.adsbygoogle || []).push({});

I have an unitary operatorf, and another binary linear operatorg.

I would like to find out a necessary and/or sufficient condition onffor the following to hold:

[tex]f(g(a,b)) = g(f(a),f(b))[/tex]

Is this always valid whenfis linear?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Question on commutativity of operators

**Physics Forums | Science Articles, Homework Help, Discussion**