Here, I’m going to explain about the MathML rendering in Safari browser on Windows OS. When I was worked with MathML, I faced some issues while rendering in Windows (OS: XP, Windows 7) and I found the solution for it. The solution is we have to use either STIX fonts or Asana fonts in Windows.
I have downloaded those fonts and pasted in font folder inside control panel. After done this, I again take the corresponding page which contains MathML data and verified that the data is rendering well.
To download STIX fonts click here
To download Asana fonts click here