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I have a simple question on precedence of operators, especially applying a function and an index.

Can we write $q(F)_i$ (without an additional pair of parentheses) for $(q(F))_i$?

Maybe, it would be better $q(F)(i)$?

What is the best way to denote this?

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is there any other way to understand $q(F)_i$? I can't think of any, and my personal taste is as little parentheses as possible. –  yohBS Mar 20 '12 at 21:27
    
The first time you use this notation you may want to explicitly describe what you mean. Some readers may not find it obvious. –  Jay Mar 20 '12 at 23:12
    
Is this something for which $q_i(F)$ is inappropriate? Unless there is a fear of misinterpreting for components or partials, that's my preference. Then $q(F)_i$. –  mixedmath Mar 20 '12 at 23:30

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