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Re: Function, Command, Operator, Object...etc.

  • To: mathgroup at
  • Subject: [mg61422] Re: [mg61350] Function, Command, Operator, Object...etc.
  • From: Chris Chiasson <chris.chiasson at>
  • Date: Tue, 18 Oct 2005 02:45:45 -0400 (EDT)
  • References: <>
  • Sender: owner-wri-mathgroup at

Maybe I am wrong, but pretty much every expression has a head and zero
or more slots. That's it.

I wonder if a pattern is an expression...

On 10/16/05, Steven T. Hatton <hattons at> wrote:
> Section 2.1.2 of The Mathematica Book for 5.2 discusses different ways to
> interpret parts of expressions.  The examples given are "Function, Command,
> Operator, Head and Object type."  Do these terms have any meaning within
> the Mathematica language, or are these purely conceptual ideas intended to
> aid the user in understanding the language?  Are these terms given formal
> definitions as regards their meaning when used to discuss Mathematica?  If
> so, where might I find these definitions?
> --
> "Philosophy is written in this grand book, The Universe. ... But the book
> cannot be understood unless one first learns to comprehend the language...
> in which it is written. It is written in the language of mathematics, ...;
> without which wanders about in a dark labyrinth."   The Lion of Gaul

Chris Chiasson

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