X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=mjo%2Fcone%2Fsymmetric_psd.py;h=fd6f9508196942cd59a578fc208324e87b7f326d;hb=a339e89c225bb46379332ecb8b0c50b918d34ac6;hp=40fd90c0e3b1d20cf8e522e8504ef8f55804b959;hpb=b4b48ce895557cc5708b090568cfa33e7d09817f;p=sage.d.git

diff --git a/mjo/cone/symmetric_psd.py b/mjo/cone/symmetric_psd.py
index 40fd90c..fd6f950 100644
--- a/mjo/cone/symmetric_psd.py
+++ b/mjo/cone/symmetric_psd.py
@@ -1,4 +1,4 @@
-"""
+r"""
 The positive semidefinite cone `$S^{n}_{+}$` is the cone consisting of
 all symmetric positive-semidefinite matrices (as a subset of
 `$\mathbb{R}^{n \times n}$`
@@ -29,6 +29,7 @@ def is_symmetric_psd(A):
     Every completely positive matrix is symmetric
     positive-semidefinite::
 
+        sage: set_random_seed()
         sage: v = vector(map(abs, random_vector(ZZ, 10)))
         sage: A = v.column() * v.row()
         sage: is_symmetric_psd(A)
@@ -260,6 +261,7 @@ def random_symmetric_psd(V, accept_zero=True, rank=None):
 
     Well, it doesn't crash at least::
 
+        sage: set_random_seed()
         sage: V = VectorSpace(QQ, 2)
         sage: A = random_symmetric_psd(V)
         sage: A.matrix_space()
@@ -269,6 +271,7 @@ def random_symmetric_psd(V, accept_zero=True, rank=None):
 
     A matrix with the desired rank is returned::
 
+        sage: set_random_seed()
         sage: V = VectorSpace(QQ, 5)
         sage: A = random_symmetric_psd(V,False,1)
         sage: A.rank()
@@ -288,6 +291,7 @@ def random_symmetric_psd(V, accept_zero=True, rank=None):
 
     If the user asks for a rank that's too high, we fail::
 
+        sage: set_random_seed()
         sage: V = VectorSpace(QQ, 2)
         sage: A = random_symmetric_psd(V,False,3)
         Traceback (most recent call last):