# Talk:Rational mapping

Very well written article!

Thanks! But it is still horribly incomplete, and I no longer write much. Ryan Reich (talk) 22:59, 15 November 2008 (UTC)

The map curves are the wrong way round, and more links need to be made to the section entitled theorems.(92.232.91.38 (talk) 12:46, 6 June 2009 (UTC)).

I'm sorry, but this makes no sense to me. What section, and what "map curves"? Ryan Reich (talk) 15:16, 7 June 2009 (UTC)

## Empty domain?

In the definition, is ${\displaystyle U}$ (the domain of ${\displaystyle f}$) assumed to be non-empty? - Saibod (talk) 10:19, 4 January 2017 (UTC)