i quote from the talk page in the image caption of the minkowski addition and anywhere else only mathematical variables should be italicized for example q q should be q q i'll check this latex uses different conventions i don't think so even if it does wp mosmath is quite explicit about this see especially the subsubsection variables jakob scholbach talk i followed your suggestions i am sorry if i missed any wrongly italicized sets also i consistently used the wp hypertext formatting and removed all latex for consistency kiefer wolfowitz talk done kiefer wolfowitz talk end of quotation