[texhax] theorem macros

[Barbara Beeton]

On Sun, 19 Aug 2012, Grant WALKER wrote:

    I am a fairly experienced LaTeX user with WinEdt but I am new to MacTex.
    I have installed the MacTex distribution successfully (several times
    now!) and I am trying a short mathematical file.  The system cannot find
    any ' theorem' macros.  I am using amsart and the packages amsmath,
    amssymb, amsthm --- it does not complain that it cannot find these.  But
    it refuses to have anything to do with any spelling of 'theorem'.  I have
    tried 'Theorem" 'thm' etc but none of these work.  The equation, its
    arrays, fonts etc seem to work OK.  But where are the theorem macros
    hiding?

    I'd be grateful for any suggestions.

you have to declare theorems with

  \newtheorem{<name of environment>}{<heading text>}[<reference number>]

where <name of environment> is what you will
use with

  \begin{theorem}
  ...
  \end{theorem}

etc.  <heading text> is usually Theorem,
Corollary, etc.  (optionsl) <reference
number> is the sectioning within which
you want these things numbered, so you
would have "Theorem 3.1" for the first
theorem in section 3.  there are three
different theorem styles.

  texdoc amsthm

to read the documentation.

(sounds like you haven't used theorems
before.)
						-- bb