mjo/cone/completely_positive.py: don't import from sage.all

diff --git a/mjo/cone/completely_positive.py b/mjo/cone/completely_positive.py
index 3dc66b454dfb8a85a4aa2ba4a4be03978a5b3690..5a6ee973bdd1e55be2080c05a1e215ec94258c55 100644 (file)
--- a/mjo/cone/completely_positive.py
+++ b/mjo/cone/completely_positive.py
@@ -5,7 +5,7 @@ the set of all matrices `$A$`of the form `$\sum uu^{T}$` for `$u \in
 `$X$` are nonnegative.
 """
 
-from sage.all import *
+from sage.symbolic.ring import SR
 from mjo.cone.symmetric_psd import factor_psd
 from mjo.cone.doubly_nonnegative import (is_doubly_nonnegative,
                                          is_extreme_doubly_nonnegative)