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I'm learning Mathematica in order to work with Linear Algebra. I found a good post here about matrix manipulation, but realized that the author used conventions that I couldn't find documented in the Wolfram explanations. Can someone point me to where these are explained.

Elegant operations on matrix rows and columns

Specific questions:

Range@12 - I see that it's the same as Range[12]. Where is the use of @ defined?

~Partition~ 3 - Again I think I see the use of the tilde, but couldn't find where its use is defined. The documentation seems to say its an "infix" without definition.

// And yet again I think I see what it means, but want to understand specifically. Where is it explained?

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James Mitchell
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  • Look up Postfix, Prefix and Infix in the documentation. When I search for @, // and ~ respectively these do show up in the documentation. – C. E. Sep 25 '16 at 13:19
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    For the meaning and references of these symbols and many others, check this answer. –  Sep 25 '16 at 13:22
  • This is all described in the Operator Precedence table, along with the highly pertinent binding power information. I am therefore marking this as already has an answer redirecting to a Q&A that discusses this. See also the general reference answer linked by Xavier above, and if you please my own terse opinion on the use of these notations in (87124) – Mr.Wizard Sep 25 '16 at 13:39

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Try on google or any search tool to type

special ways to imput expression wolfram mathematica

or in help

postfix operator

you will find the answer needed

cyrille.piatecki
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  • -1. The meaning of shortcuts are notoriously hard to find through search engines.(But can sometimes be found by searching in the documentation.) – V.E. Sep 25 '16 at 13:23
  • V. E. for you the answer which is in SpecialWaysToInputExpressions accessible by the help is so hard to understand. On many cases I have asked questions which have a simple answer in the documentation. Sometimes we are shy to look at it. – cyrille.piatecki Sep 25 '16 at 14:31
  • And to finish look V. E. look at the last words of the question : Where is it explained? I was not thinking my answer merits a down vote – cyrille.piatecki Sep 25 '16 at 14:54
  • If you had linked the page, it would have been a good answer! But I don't think "Google it" is a good answer in this case, even if you tell him what to google.. – V.E. Sep 25 '16 at 15:06