From: Michael Orlitzky <michael@orlitzky.com>
Date: Sun, 4 Nov 2018 06:42:23 +0000 (-0500)
Subject: cone/symmetric_psd.py: use two more generator expressions.
X-Git-Url: http://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=f79e891ca154b0fa935a14001b0b6ed194425741;p=sage.d.git

cone/symmetric_psd.py: use two more generator expressions.
---

diff --git a/mjo/cone/symmetric_psd.py b/mjo/cone/symmetric_psd.py
index 68be78f..1b3dd8a 100644
--- a/mjo/cone/symmetric_psd.py
+++ b/mjo/cone/symmetric_psd.py
@@ -193,10 +193,10 @@ def factor_psd(A):
     all_evs = unit_eigenvectors(A)
     evs = [ (val,vec) for (val,vec) in all_evs if not val == 0 ]
 
-    d = [ sqrt(val) for (val,vec) in evs ]
+    d = ( val.sqrt() for (val,vec) in evs )
     root_D = diagonal_matrix(d).change_ring(A.base_ring())
 
-    Q = matrix(A.base_ring(), [ vec for (val,vec) in evs ]).transpose()
+    Q = matrix(A.base_ring(), ( vec for (val,vec) in evs )).transpose()
 
     return Q*root_D*Q.transpose()