[texhax] Puzzling (La)TeX output

Justin C. Walker justin at mac.com
Thu May 4 23:30:06 CEST 2006


I tripped over this and can't explain it; I hope someone here will  
show me what I am missing:

Using this source:

\newcommand{\dx}{\rm dx}


the output has both "dx_i"s the same ("upright", including the  
subscript).  If I use


the output is what I would expect (the second "dx", and both "i"s are  
"italic").  I'm clearly missing or forgetting something about the way  
(La)TeX operates.


Thanks for the help.



Justin C. Walker, Curmudgeon-At-Large
Institute for the Absorption of Federal Funds
Some people have a mental horizon of radius zero, and
call it their point of view.
   -- David Hilbert

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