examples.tex: mention the new Moore-Penrose \pseudoinverse.

diff --git a/examples.tex b/examples.tex
index f33ed747d4f5e03dd3cb33f7106e9a417d8f2748..26db4b1a03c81a218f354a6eaa23c038de592352 100644 (file)
--- a/examples.tex
+++ b/examples.tex
@@ -98,7 +98,9 @@
     their tensor product is $\tp{x}{y}$. The Kronecker product of
     matrices $A$ and $B$ is $\kp{A}{B}$. The adjoint of the operator
     $L$ is $\adjoint{L}$, or if it's a matrix, then its transpose is
-    $\transpose{L}$. Its trace is $\trace{L}$.
+    $\transpose{L}$. Its trace is $\trace{L}$. Another matrix-specific
+    concept is the Moore-Penrose pseudoinverse of $L$, denoted by
+    $\pseudoinverse{L}$.
 
     The span of a set $X$ is $\spanof{X}$, and its codimension is
     $\codim{X}$. The projection of $X$ onto $V$ is $\proj{V}{X}$. The