- >>> K.contains_strict(matrix([[0,0],[0,0]], tc='d'))
+ >>> K.contains_strict(matrix([[0,0],[0,0]]))
+ False
+
+ >>> K = SymmetricPSD(3)
+ >>> matrix([[2,-1,0],[-1,2,-1],[0,-1,2]]) in K
+ True
+
+ >>> K = SymmetricPSD(5)
+ >>> A = matrix([[5,4,3,2,1],
+ ... [4,5,4,3,2],
+ ... [3,4,5,4,3],
+ ... [2,3,4,5,4],
+ ... [1,2,3,4,5]])
+ >>> A in K
+ True
+
+ >>> K = SymmetricPSD(5)
+ >>> A = matrix([[1,0,0,0,0],
+ ... [0,1,0,0,0],
+ ... [0,0,0,0,0],
+ ... [0,0,0,1,0],
+ ... [0,0,0,0,1]])
+ >>> K.contains_strict(A)