# The Cauchy functional equation (Hamel) [closed]

Does anyone know how to express the general solution to the Cauchy functional equation $$\phi(a+b)=\phi(a)\phi(b)$$ considered in a Hamel basis? I think that it makes sense when $$\dfrac{L(\phi(a))}{a}$$ is not a constant. Am I wrong?

• Does this answer your question? General solution considering Hamel basis – Panagiotis Konstantis Feb 9 at 7:06
• I posted it yesterday, but my question had a typo... – DavidJHop Feb 9 at 7:10
• The usual procedure is to edit your old question so that it no longer has a typo. This also causes it to be re-bumped to the front page as if it were a new question. Posting a duplicate with a correction to the typo is counter-productive, because the old question is still around. Therefore I think it's a good idea to concentrate on the old question and remove this one. – Robert Furber Feb 9 at 7:17
• I know, but my old question is closed... – DavidJHop Feb 9 at 7:21