[NTG-context] interpunct is not shown like \cdot in mathmode

Hey. Trying to use the interpunct · as a dot operator (normally \cdot), I noticed, that it is not shown correctly in math mode. Since the interpunct has different applications in different languages, in text mode its appearance seems to be okay. But isn't it possible to change its functionality to a multiplication sign in math mode? Find tex- and pdf-file attached. Yoraxe