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

Date: Thu, 17 Jul 2003 12:32:26 +0100

Message-Id: <200307171132.MAA02934@penguin.nag.co.uk>

To: suri_rahul1@rediffmail.com

CC: www-math@w3.org

Date: Thu, 17 Jul 2003 12:32:26 +0100

Message-Id: <200307171132.MAA02934@penguin.nag.co.uk>

To: suri_rahul1@rediffmail.com

CC: www-math@w3.org

Please clarify the difference between Presentation Mathml and Content Mathml. Your question was not very specific, you didn't make clear which part of the existing text describing the difference you found uncluear. There are examples in "MathML Fundamentals" http://www.w3.org/TR/MathML2/chapter2.html that are given in both presentation and content form. Presentation mathml encodes the presentation layout so <msup><mi>H</mi><mn>2</mn></msup> is the same as TeX H^2 and means H with superscript 2, whatever that means, it might mean H times H or the 2nd Cohomolgy group or anything else depending on context. The content MathML <apply><power/><ci>H</ci><cn>2</cn></apply> means the power function applied to H and 2 so it definitely means H times H, it probably is rendered as H^2, but unlike the presentation form it is more or less unambiguous about its meaning. (The meaning of power itself might change depending on what group you are working over) David ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________Received on Thursday, 17 July 2003 07:32:45 UTC

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