I want to use a unicode character, say $ℝ$, and get the equivalent command $\mathbb{R}$. So what I want is something like
\newcommandℝ{\mathbb{R}} //it won't work by default, of course How can I do this? I know this is not related to use unicode-math package, because unicode-math package transform unicode to corresponding output, however I just want to use some unicode characters as a shorthand only (to increase the readibility).
\documentclass{article} \usepackage{amssymb} \usepackage[utf8]{inputenc} \usepackage{newunicodechar} \newunicodechar{ℝ}{\mathbb{R}} \begin{document} $ \mathbb{R} =1$ $ ℝ = 1 $ \end{document} For XeLaTeX you can just remove the inputenc package, but in this case is simpler the David's suggestion of use unicode-math.
;-) :-) If you are using
\usepackage[utf8]{inputenc} then just add
\DeclareUnicodeCharacter{211D}{\mathbb{R}} With unicode TeX engines it is probably advisable to use unicode-math which would allow ℝ to be typeset directly, but if you are using 8bit math fonts still then you can use
\catcode`ℝ=13 \newcommandℝ{\mathbb{R}} \DeclareUnicodeCharacter{211D}{\mathbb{R}} without any conflict? unicode-math package, the fonts embedded in the pdf file will be changed to TTF format(I checked those by Adobe Reader). And due to the strange behavior of Illustrator, the pdf file cannot be properly modified again due to the font matter. (I use illustrator to do further fancy decorations.) And I also want something like: whenever I type ☆{}, it correspond to the command \proof{}, where \proof is a command defined by me. 13 mean in your code?
\mathbb{R}, but after a second the editor simply displays a ℝ.