%For details on how to use AMS TeX please see:
%M. D. Spivak, A Gourmet Guide to typesetting with AMS TeX macro package,
%American Mathematical Society, Providence, Rhode Island, 1990

\input amstex
\documentstyle{amsppt}

\pageheight{25truecm}
\pagewidt{17truecm}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Put your local definitions here, for example
%\define\MyNewCommand#1{This is my new command #1}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\topmatter

\title
This is the title of your talk or paper
\endtitle

\author
A. U. Thor
\endauthor

For every co-author should be given separately.

It is not necessary if the current address councides with the address.

\email
Here you put the e-mail address
For every co-author should be given separately.
\endemail

\date
Here you put the date when you sent this file.
\enddate

%AMS Math Subject Classifications
\subjclass
Primary ?????, ?????;
Secondary ?????, ?????
\endsubjclass

\abstract
Here you put the abstract of your paper.
\endabstract

\thanks
Here you put the thanks to sponsors if any.
\endthanks

\endtopmatter

\document

%%%%%%%%%%%%%%%%%%%%%%%%
%Below are some examples on how to type mathematics.
%Please run AMS TeX to see how does it look like.
%%%%%%%%%%%%%%%%%%%%%%%%

\proclaim {Theorem 1}
If $a=b$ then $b=a$.
\endproclaim

\remark {Remark 1}
Theorem 1 is valid for $a=0$ and $b=0$.
\endremark

\demo {Proof of Theorem 1}
The proof is obvious.
\qed\enddemo

\definition {Definition 1}
A number $n$ is called positive if $n>0$.
\enddefinition

\example {Example 1}
Any natural number is positive.
\endexample

$$\sin^2x+\cos^2x=1.$$

$$\gather \sin^2x+\cos^2x=1, \\ 1+2+\dots+n=\frac {n(n+1)}2. \endgather$$

\align \sin^2x+\cos^2x&=1 \\ &=2-1. \endalign

\Refs

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Here your list of references starts.
%Below are two examples of how to type references.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\ref
\no 1
\by A. U. Thor
\yr 2002
\book The title of the book
\publ The name of the publishers
\endref

\ref
\no 2
\by A. U. Thor
\yr 2002
\paper The title of the paper
\jour The name of the journal
\vol 1
\issue 2
\pages 3--4
\endref

\endRefs

\enddocument