von Gagern » Martin » HOWTOs » | FF3 MathML |
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The issue described here is addressed by Gentoo Bug #231746.
On my system, a Gentoo Linux, Firefox used the clubs suit symbol instead of a vertical lines in mathematical formulas.
The MathML construct
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML"> <mfenced open="{" close="}"><mrow> <mrow><mn>2</mn><mo>⁢</mo><mi>x</mi></mrow> <mo>|</mo> <mrow><mi>x</mi><mo><</mo><mn>5</mn></mrow> </mrow></mfenced> <mo>≠</mo> <mfenced open="{" close="}"><mrow> <mrow><msup><mi>x</mi><mn>2</mn></msup></mrow> <mo>|</mo> <mrow><mi>x</mi><mo><</mo><mn>5</mn></mrow> </mrow></mfenced> </math>
is rendered by your system as
2x | x<5 ≠ x2 | x<5and by my Firefox 3 (Gentoo package www-client/mozilla-firefox-3.0-r1) as
In my prefs.js there was this line:
user_pref("font.mathfont-family", "CMSY10, CMEX10, Mathematica1, Mathematica2, Mathematica4, MT Extra, Standard Symbols L");
It was created in response to a recommendation from the media-fonts/mathematica-fonts ebuild. Removing that entry solved the issue for me.