[HaTeX] summation big sigma

[Daniel Díaz Casanueva]

Regarding this question, today I pushed the next commit:

https://github.com/Daniel-Diaz/HaTeX/commit/24d843db8beeb8625c54928ab97cac5ec79c281b

It adds the function missed here and some more.

Good luck,
Daniel Díaz.


On Sun, Jun 30, 2013 at 1:28 PM, Daniel Díaz Casanueva <
dhelta.diaz at gmail.com> wrote:

> Hello Kees.
>
> To write a sigma summation you need to use a special LaTeX symbol called
> "sum". The sigmau function creates a sigma letter that will be treated as
> exactly that, a letter. Unfortunately, the sum symbol is not in HaTeX yet,
> but you can use the function "raw" no insert your own LaTeX code.
>
> raw "\\sum" !: "j=1" ^: "n"
>
> Note that LaTeX will render it differently depending if the sum is in an
> inline math expression or in a math environment. In the first case, you
> will still see the limits of the sum at the right of the sigma. To have the
> limits above and below the sigma in an inline math expression, you need to
> include the "limits" command, like this:
>
> raw "\\sum \\limits" !: "j=1" ^: "n"
>
> But note that there is a reason because LaTeX does not put the text above
> and below the sigma in inline expressions. It does so to preserve the
> vertical space of the line, maintaining the document's look consistency.
>
> I think this is the best solution in the current release of HaTeX
> (3.6.0.1), although I am certainly going to work to improve the situation
> and make HaTeX do this work for you in a next release.
>
> Good luck,
> Daniel Díaz.
>
>
> On Sun, Jun 30, 2013 at 11:43 AM, Kees Bleijenberg <
> k.bleijenberg at lijbrandt.nl> wrote:
>
>> How do you create a big summation sigma with index (from … to)  with
>> Hatex?****
>>
>> I tried sigmau with ^: “n” and !: “j=1”  but it is not exactly what I
>> want (the index n is not above the sigma but too far to the right)****
>>
>> ** **
>>
>> Kees****
>>
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>>
>>
>
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