am­sart – LaTeX doc­u­ment class for AMS math jour­nal ar­ti­cles

A LaTeX doc­u­ment class for ar­ti­cles that is tai­lored to the de­sign of Amer­i­can Math­e­mat­i­cal So­ci­ety jour­nals. If you have a stan­dard in­stal­la­tion of LaTeX, you should find that am­sart is al­ready present, since it is part of the (“re­quired”) AMS-LaTeX dis­tri­bu­tion.
For pub­li­ca­tion-spe­cific AMS doc­u­ment classes (jams-l.cls, bull-l.cls, tran-l.cls, proc-l.cls, mcom-l.cls, etc.), see the AMS au­thor in­for­ma­tion.