[texhax] \Pr and displaylimits

Aditya Mahajan adityam at umich.edu
Sun Aug 19 05:12:46 CEST 2007


I have a question about the rationale of defining \Pr with 

In plain.tex \Pr is defined without \nolimits as

\def\Pr{\mathop{\rm Pr}}

Other macro packages (LaTeX and ConTeXt) provide hooks for changing 
operator fonts, but basically copy this definition without the 
nolimits. In the books that I have seen, limits on Pr have the visual 
effect of

\Pr\nolimits^{g}(X \mid Y)

So why did Knuth choose not to have a \nolimit with \Pr. 
Are there branches of mathematics where limits with Pr should be 


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