15 Math Extensions with AMS-LATEX
The American Mathematical Society, AMS, has supported the development and usage of TEX since its first release. Shortly after TEX 82 became available, the AMS produced a macro package for generating a special format
amstex, described in The Joy of TEX by Spivak (1990). The macros in this AMS-TEX complement the mathematical typesetting features of Plain TEX by adding additional ones and simplifying others.
However, AMS-TEX is not a documentation preparation system like LATEX, describing the logical layout of a document by means of markup commands, but rather is simply an extension to Plain TEX.
The great popularity of TEX as a text formatting program is due primarily to the availability of LATEX as a user-friendly ...