From: William F Hammond <hammond@csc.albany.edu>

Date: Mon, 18 Feb 2013 14:32:40 -0500

To: David Carlisle <davidc@nag.co.uk>

Cc: Ionel Alexandru <ionel.alexandru@gmail.com>, <www-math@w3.org>

Message-ID: <i7bobho1t3.fsf@hilbert.math.albany.edu>

Date: Mon, 18 Feb 2013 14:32:40 -0500

To: David Carlisle <davidc@nag.co.uk>

Cc: Ionel Alexandru <ionel.alexandru@gmail.com>, <www-math@w3.org>

Message-ID: <i7bobho1t3.fsf@hilbert.math.albany.edu>

David Carlisle writes in part: > I attach the rendering of firefox and mathplayer with the following > example, which shows fractions of different sizes aligning such that > their bars match that of + (which is also what TeX would do). > > ... > > <!DOCTYPE html> > <html> > <title>test</title> > <body> > <math xmlns="http://www.w3.org/1998/Math/MathML"> > <mrow> > <mtext>aaa</mtext> > <mo>+</mo> > <mfrac><mn>1</mn><mn>2</mn></mfrac> > <mtext>aaa</mtext> > <mo>+</mo> > <mfrac><msup><mi>A</mi><mi>A</mi></msup><mi>b</mi></mfrac> > </mrow> > </math> > </body> > </html> Of course, the semantics are not defined, but, relative to default semantics, you've used mtext where I think it would have been better to use mi (without, for correct user agents, changing the rendered appearance). Thus, the mrow might be: <mrow> <mtext>An example: </mtext> <mi>aaa</mi> <mo>+</mo> <mfrac><mn>1</mn><mn>2</mn></mfrac> <mi>aaa</mi> <mo>+</mo> <mfrac><msup><mi>A</mi><mi>A</mi></msup><mi>b</mi></mfrac> </mrow> -- BillReceived on Monday, 18 February 2013 19:33:12 UTC

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