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Re: Representing Cancelations of Terms in Fractions

From: Neil Soiffer <Neils@dessci.com>
Date: Sat, 19 Apr 2008 13:28:01 -0700
Message-ID: <d98bce170804191328w23049808rd6f858f9d5d44610@mail.gmail.com>
To: "Eliot Kimber" <ekimber@reallysi.com>
Cc: www-html@w3.org, "Public MathML mailing list" <www-math@w3.org>
On Fri, Apr 18, 2008 at 10:33 AM, Eliot Kimber <ekimber@reallysi.com> wrote:

> I'm working with education publishers on developing XML representations of
> things like textbooks and test prep manuals. These publishers are using
> primarily InDesign with InMath to author their equations. I can capture the
> raw InDesign data and InMath is working on an XML representation that
> captures the structure of the equations in a form that is almost MathML
> presentation.
> But, one sticking point is the representation of equations with canceled
> terms, such as fractions where common terms are shown canceled with a
> diagonal strike out.
> My understanding from reading the MathML 2 spec is that this can be
> represented using the menclose element with a notation of "updiagonalstrike"
> or "downdiagonalstrike". However, it's not rendered in Firefox and I can't
> MathType or Amaya to create anything other than a long division type
> enclosure.
> My questions are:
> 1. is my understanding of menclose and *diagonalstrike correct in that
> this is the intended way to represent strikeouts in MathML?

Yes, that is correct.

> 2. Is there any MathML renderer that will render diagonal strikeouts
> today?
> MathPlayer, the free plug-in for IE so that it renders MathML (and makes
it accessible) handles them all.  I've attached a screen shot (the last two
examples are nested mencloses).

Hopefully as MathML approaches the time for implementors to do
implementations, Firefox will have a flurry of activity and missing features
such as the one you found will get done.

Neil Soiffer
Senior Scientist
Design Science, Inc.
~ Makers of Equation Editor, MathType, MathPlayer and MathFlow ~

(image/png attachment: menclose.png)

Received on Saturday, 19 April 2008 20:28:34 UTC

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