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I was just playing around with entering two dimensional forms of some expressions. As an example, I wanted to write Integral[Cot[t],t]. I got as far as \[Integral]Cot[t] \[DifferentialD]t.

But I would love to make it look even more natural by omitting the brackets around the t. Is there any \[] character that helps me do that?

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up vote 8 down vote accepted

Looks like you can use \[InvisibleApplication]. It's probably also worth knowing \[InvisibleComma] when writing expressions this way.

For example in your case: \[Integral]Cot\[InvisibleApplication]t \[DifferentialD]t

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This bit me once... see this question that I asked (also the very first question on this site). You might also find \[InvisibleSpace], \[ImplicitPlus] and \[InvisibleTimes] useful if you choose to go this route, but be aware that these might make it very hard to debug and make it less readable for others. –  rm -rf Jul 19 '12 at 1:35
    
@R.M Have you ever figured out what \[ImplicitPlus] is used for? –  sebhofer Jul 19 '12 at 8:42
    
@sebhofer, Wolfram's example is 9\[ImplicitPlus]3<Ctrl-/>4 for 9-and-three-quarters written in its traditional numberical form. –  sblom Jul 19 '12 at 16:34
    
Wow... mixed fractions. Haven't used that since elementary school ;-) –  sebhofer Jul 19 '12 at 19:02
    
(Did I actually type "numberical"? Sigh.) –  sblom Jul 19 '12 at 19:03
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