On Mon, 17 Apr 2006, Robert Dodier wrote:
> On 4/17/06, Andrey G. Grozin <A.G.Grozin at inp.nsk.su> wrote:
>> and you get
>>
>> (A ^ {- B + C })
>>
>> The sum B+C is not in parenthes, though it should be.
> Hmm, this seems to be something of a matter of taste.
> Because of the way a^b is typeset, I don't think A^{-B + C} is
> ambiguous -- I don't think it can be interpreted as A^{-B} + C or
> something else. So the parentheses are optional, aren't they?
No, they are not! The correct result is
A^{-(B+C)}
The result produced by the current code is
A^{-B+C}
and it is mathematically incorrect!
Andrey