resolve: ordering: Mention that inverse of permutation matrix is tran…

…spose.
riaanvddool · Feb 19, 2010 · 3f43124 · 3f43124
1 parent 3a1abb5
commit 3f43124
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/supreme/resolve/ordering.py b/supreme/resolve/ordering.py
@@ -21,6 +21,11 @@ def special_form(A):
     P : sparse matrix
         Permutation matrix such that PA is in special form.
 
+    Notes
+    -----
+    The permutation matrix is orthogonal, and as such its
+    inverse is simply ``P.T``.
+
     """
     if not sparse.issparse(A):
         A = sparse.csr_matrix(A)