mailing-list for TeXmacs Users

[Norbert Nemec <address@hidden>]

The simple trick mentioned before was: insert a large space (to be found in 
the "large symbol menu" - sum, product, etc. and then use the "closing 
vertical bar"

The former thread about this was 'Operator for "variable substitution"', Jul. 
11, 2003

On Montag, 18. August 2003 18:20, David Allouche wrote:
> On Wed, Aug 13, 2003 at 02:45:15PM +0200, Marten Bauer wrote:
> > Hello,
> >
> > since a long time I have got the following problem. When I write an
> > Integral and build the Ingetral Function like
> >
> >                                                 | Pi/2
> >
> > integral(0,Pi/2,sin(x))=-cos(x)|         =-cos(Pi/2)+cos(0)=....
> >
> >                                                 |0
> >
> >                                     ^^^^^^^^^^
> > Then I have always the problem to write the ^^^ market Array. I tried it
> > with an big line (braket menu), but when I try to attach an right
> > subscript and right superscript then the big line will be shorter. Why?
> > How must I do it the right way?
>
> There have been a discussion not long ago about a similar problem. I
> do not remember the specifics and I could not find it in my mailboxes.



>
> I have done considerable experimentation involving big delimiters,
> separators, using the invisible separators and delimiters, and tables.
> And I had arrived at the conclusion that there is no way to get the
> result you want. :-(
>
> But...
>
> Suddenly, I saw the light! Remember the trick to have indices and
> exponents around matrices? This involves the GROUP primitive.
>
> So here is the trick for your Primitive operator:
>
>   (document
>    (with "mode" "math"
>      (assign "primitive" (macro "f" "x1" "x2"
>        (concat (group (concat (big ".")
>                             (arg "f") (mid "|")))
>              (rsub (arg "x1")) (rsup (arg "x2"))))))
>    (equation* (document (concat
>      (big "int") (rsub "0") (rsup (frac "<pi>" "2")) "sin x="
>      (primitive "cos x" "0" (frac "<pi>" "2"))))))
>
> You can paste this in any texmacs document using
> "Edit->Paste from->Scheme".
>
> Who was at the origin of the previous discussion (I believe it
> involved brackets as well) please post again. Your problem may be
> solveable using a similar trick.

-- 
______________________Norbert Nemec <address@hidden>

    Universität Erlangen-Nürnberg, Germany            
    Institut für Theoretische Physik III             
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