# Tag Info

## About amsthm

A package that facilitates the kind of theorem setup typically needed in American Mathematical Society publications. The package offers the theorem setup of the AMS document classes (amsart, amsbook, etc.) encapsulated in LaTeX package form so that it can be used with other document classes.

The {amsthm} package provides an enhanced version of LaTeX's `\newtheorem` command for dening theorem-like environments. The enhanced `\newtheorem` recognizes a `\theoremstyle` specication (as in Mittelbach's `theorem` package) and has a `*` form for dening unnumbered environments. The `amsthm` package also defines a `proof` environment that automatically adds a QED symbol at the end. AMS document classes incorporate the `amsthm` package, so everything described here applies to them as well.

If the `amsthm` package is used with a non-AMS document class and with the `amsmath` package, `amsthm` must be loaded after `amsmath`, not before.