[OS X TeX] meaning of Warning

[Alex Hamann]

Could somebody explain me what the following warnings are supposed to  
mean?


LaTeX Font Warning: Encoding `OT1' has changed to `U' for symbol font
(Font)              `operators' in the math version `normal' on input  
line 21.

LaTeX Font Warning: Encoding `OT1' has changed to `U' for symbol font
(Font)              `operators' in the math version `bold' on input  
line 21.


Thank you in advance,
Alex

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