Ticket #3719: 10128.patch

a/sage/groups/perm_gps/permgroup.py

@@ -62 +62 @@
-    - David Joyner (2007-08): fixed bugs in composition_series, upper/lower_central_series, derived_series,
-    - David Joyner (2008-06): modified is_normal (reported by W. J. Palenstijn),
-                              and added normalizes
+    - David Joyner (2008-08): Added example to docstring of cohomology.
-
-REFERENCES:
-    Cameron, P., Permutation Groups. New York: Cambridge University Press, 1999.
@@ -1022 +1023 @@
-            GAP package HAP (in gap_packages-*.spkg).
-
-        EXAMPLES:
+            sage: gap.eval('LoadPackage("hap")')               # requires optional gap_packages
+            'true'
+            sage: G = SymmetricGroup(4)
+            sage: G.cohomology(1,2)                            # requires optional gap_packages
+            Multiplicative Abelian Group isomorphic to C2
-            sage: G = SymmetricGroup(3)
-            sage: G.cohomology(5)                              # requires optional gap_packages
-            Trivial Abelian Group
@@ -1040 +1046 @@
-            David Joyner and Graham Ellis
-
-        REFERENCES:
-
-
+
+
+
-            D. Joyner, "A primer on computational group homology and cohomology",
-\code{http://front.math.ucdavis.edu/0706.0549}
+ \code{http://front.math.ucdavis.edu/0706.0549}.
-
-        """
-        gap.eval('RequirePackage("HAP")')