On Mon, Apr 13, 2020 at 10:52 AM Benoit <[email protected]> wrote:

> Many symbols used in math are obtained by stacking symbols.  For instance,
> an isomorphism is often denoted by an arrow with a tilde above it:
>
>   $\overset{\sim}{\longrightarrow}$
>
> Is there a simple way to display something close to it in HTML with
> unicode encoding ? This would fill the dots in
>
>   althtmldef "isomorphism" as " ............. ";
>
> Actually, I recently entered in set.mm the lines
>
>   htmldef "-Set->" as " -Set-> ";
>     althtmldef "-Set->" as " &#x27F6;<sub>Set</sub> ";
>     latexdef "-Set->" as "\longrightarrow_{\mathrm{Set}}";
>
> (see ~ df-bj-fset) but I would prefer to be able to display something
> close to:
>
>   $\overset{\text{Set}}{\longrightarrow}$
>
> Any ideas ?
>

This is a HTML abuse, but...

<ruby>&#x27F6;<rt style='font-size: 1rem;'>Set</big></ruby>

André

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