Amstex
AMS-LaTeX is a collection of LaTeX document classes and packages developed for the American Mathematical Society (AMS). Its additions to LaTeX include the typesetting of multi-line and other mathematical statements, document classes, and fonts containing numerous mathematical symbols.
It has largely superseded the plain TeX macro package AMS-TeX. AMS-TeX was originally written by Michael Spivak, and was used by the AMS from 1983 to 1985.
MathJax supports AMS-LaTeX through extensions.
The following code of the LaTeX2e produces the AMS-LaTeX logo:
The package has a suite of facilities to format multi-line equations. For example, the following code,
causes the equals signs in the two lines to be aligned with one another, like this:
y
=
(
x
+
1
)
2
=
x
2
+
2
x
+
1
{\displaystyle {\begin{aligned}y&=(x+1)^{2}\\&=x^{2}+2x+1\end{aligned}}}
AMS-LaTeX also includes many flexible commands for formatting and numbering theorems, lemmas, etc. For example, one may use the environment theorem
to generate
Theorem (Pythagoras) Suppose
a
≤
b
≤
c
{\displaystyle a\leq b\leq c}
are the side-lengths of a right triangle. Then
a
2
+
b
2
=
c
2
{\displaystyle a^{2}+b^{2}=c^{2}}
.
Proof. . . □
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