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Content and Presentation MathML

• To: mathgroup at smc.vnet.net
• Subject: [mg64971] Content and Presentation MathML
• From: DavidT <dtausky at tausky.ca>
• Date: Fri, 10 Mar 2006 05:15:02 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

If I paste a presentation MathML of the expression â?«x dx, although Mathematica correctly displays it, the expression can not be really processed (shift+enter) and I get an error.

Also, if I try to use
XML`MathML`MathMLToExpression["<math xmlns='http://www.w3.org/1998/Math/MathML'><mrow><mo>&Integral;</mo><mi>x</mi><mo>&InvisibleTimes;</mo><mrow><mo>&DifferentialD;</mo><mi>x</mi></mrow></mrow></math>"]
I get an error. The error message is complaining the expression is not complete. 

If I paste a mixed MathML (Presentation and Content) it works fine.

Is there a way to make Mathematica accept only presentation MathML?

In expressions like x+y it accepts presentation only MathML and works fine but not with the integral example, although the expression is correctly displayed.