fix PolyhedronFace.dim()

sagemath · Oct 25, 2019 · 4e5912d · 4e5912d
1 parent 76b7fdd
commit 4e5912d
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/sage/geometry/polyhedron/face.py b/src/sage/geometry/polyhedron/face.py
@@ -577,8 +577,9 @@ def dim(self):
         if self.n_ambient_Vrepresentation() == 0:
             return -1
         else:
-            origin = vector(self.ambient_Vrepresentation(0))
-            v_list = [ vector(v)-origin for v in self.ambient_Vrepresentation() ]
+            origin = self.vertices()[0].vector()
+            v_list = [vector(v)-origin for v in self.ambient_Vrepresentation() if v.is_vertex()]
+            v_list += [vector(v) for v in self.ambient_Vrepresentation() if v.is_ray() or v.is_line()]
             return matrix(v_list).rank()
 
     def _repr_(self):