X-Git-Url: https://svn.cri.ensmp.fr/git/linpy.git/blobdiff_plain/7941e9e70af9f90f2fce0fd3ea694fc0b422f583..c774b95a5e3c664d7adaeac83aace2b045d38a9f:/examples/squares.py

diff --git a/examples/squares.py b/examples/squares.py
index 0f4e1a5..d23e636 100755
--- a/examples/squares.py
+++ b/examples/squares.py
@@ -2,15 +2,15 @@
 
 from pypol import *
 
-x, y = symbols('x y')
+a, x, y, z = symbols('a x y z')
 
 sq1 = Le(0, x) & Le(x, 2) & Le(0, y) & Le(y, 2)
 sq2 = Le(2, x) & Le(x, 4) & Le(2, y) & Le(y, 4)
-
 sq3 = Le(0, x) & Le(x, 3) & Le(0, y) & Le(y, 3)
 sq4 = Le(1, x) & Le(x, 2) & Le(1, y) & Le(y, 2)
 sq5 = Le(1, x) & Le(x, 2) & Le(1, y) 
 sq6 = Le(1, x) & Le(x, 2) & Le(1, y) & Eq(y, 3)
+sq7 = Le(0, x) & Le(x, 2) & Le(0, y) & Eq(z, 2) & Le(a, 3)
 u = Polyhedron([])
 x = sq1 - sq2
 
@@ -62,4 +62,6 @@ print('is sq5 bounded?', sq5.isbounded()) #unbounded should return False
 print()
 print('sq6:', sq6)
 print('sq6 simplified:', sq6.sample())
+print()
+print('sq7 with out constraints involving y and a', sq7.drop_dims('y a'))