From 77433d7ad52ad07d4fbed331c0fed384998aa86e Mon Sep 17 00:00:00 2001
From: Jonathan Kliem <jonathan.kliem@fu-berlin.de>
Date: Fri, 3 Apr 2020 13:45:18 +0200
Subject: [PATCH] caching `is_pyramid`

---
 src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx b/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx
index 2d9fb7c6584..ab1995478b3 100644
--- a/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx
+++ b/src/sage/geometry/polyhedron/combinatorial_polyhedron/base.pyx
@@ -1783,6 +1783,7 @@ cdef class CombinatorialPolyhedron(SageObject):
 
         return not any(vertices)
 
+    @cached_method
     def is_pyramid(self, certificate=False):
         r"""
         Test whether the polytope is a pyramid over one of its facets.