On Wed, Apr 22, 2020 at 4:36 PM Tom Lane <t...@sss.pgh.pa.us> wrote:

> One thing that surprised me is that I couldn't find any well-known
> name for what the * and / operators are doing; digging around on
> the net and in some dusty old math textbooks didn't yield any exact
> matches.  I ended up adding footnotes with the actual computations,
> but I'm not very happy with that approach.  Surely Lockhart[1] got this
> definition from someplace, though, and didn't invent it out of thin air.
>
>
I'd move the footnote indicator to:

Available for point[a], box, path, circle.
Available for point[b], box, path, circle.

As the footnote only applies to that specific left operand type.

Or maybe:

Available for box, path, and circle.  It is also defined for point [a] but
it has no related physical meaning.

David J.

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