Add mjo-algebra.tex with \polyring and \Frac commands.

[mjotex.git] / examples.tex

diff --git a/examples.tex b/examples.tex
index 6e1c5007abf16c19d48f8eadb7c1a03b85a49cab..a43b26ef3fb89c9a341c6b57b8af3127112a3781 100644 (file)
--- a/examples.tex
+++ b/examples.tex
@@ -5,6 +5,13 @@
 
 \begin{document}
 
+  \begin{section}{Algebra}
+    If $R$ is a commutative ring, then $\polyring{R}{X,Y,Z}$ is a
+    multivariate polynomial ring with indeterminates $X$, $Y$, and
+    $Z$, and coefficients in $R$. If $R$ is a moreover an integral
+    domain, then its fraction field is $\Frac{R}$.
+  \end{section}
+
   \begin{section}{Algorithm}
     An example of an algorithm (bogosort) environment.