Talk:Vanish at infinity

Capital F
what does the "capital F" notation stand for? is a brief description needed?Brad7777 (talk) 14:45, 6 November 2011 (UTC)


 * Are you talking about $$\mathbb{F}$$ in
 * $$f:\Omega\rightarrow\mathbb{F}$$ (where $$\mathbb{F}$$ is one of $$\mathbb{R})$$?
 * As the article exlains, $$\mathbb{F}$$ is a stand-in for one of the fields $$\mathbb{R}$$ and $$\mathbb{C}$$, with "F" probably intended to be reminiscent of field. This usage is quite common. (Though the symbol $$\mathbb{K}$$ is probably even more commonly used in the same function, with "K" för Körper, the german term for field.) — Tobias Bergemann (talk) 13:46, 8 November 2011 (UTC)


 * Well... I guess no one will complain if I change it from $$\mathbb{F}$$ to the more commonly used $$\mathbb{K}$$, right? Many people like to use $$\mathbb{F}$$ for finite fields (or at least fields of non-zero characteristic)... Lenacore (talk) 12:32, 11 March 2015 (UTC)