On 2/21/2011 7:16 AM, Marco Rofei wrote:
> Hi,
> is there a way to get a superscript or subscript before the variable
> letter, like the *0* in the attached image, using the ' operator?
>
> eg
>
> (%i1) 'superscript(0)A[1];
>
> MR
>
>
>
>
>
>
>
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Is this only for TeX output, or regular display? They would require
augmenting
the Tex or the display, and they are probably different. Or here's an idea:
we create an object that has no display form, and do this:
{}^u*A[v]. Unfortunately we have the case in hand that u=0.
So maybe one has to hack this more.
while we are at it, consider all 4 positions, pre-sub-script,
pre-super-script, as well
as post-super-script and post-sub-script.
then one could define display formats via displayform (A(a,b,c,d)) :=
subsuperscript_form(A,a,b,c,d) for the 4
positions..
RJF