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3 questions
2
votes
1
answer
132
views
Can I tell whether a symbol is build-in (part of the System` library)?
I'd like a function that checks whether a symbol is a predefined part of the language or not. More generally, it might check whether it's part of a given package.
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1
vote
1
answer
98
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any possible meaning to a "terminal" slash (/)? [closed]
I've been directed to the web page
http://functions.wolfram.com/07.31.16.0001.01
The first statement in the formula is
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10
votes
1
answer
371
views
Defining my own invisible operator
There are some invisible operators in Mathematica (\[ImplicitPlus],\[InvisibleTimes],...