PLAN.

diff --git a/PLAN b/PLAN
index a78f57c63f0797ad72a69be2c7886bcd2707db04..15b9160001f460dad5a8a618b925a7671bcc0d5b 100644 (file)
--- a/PLAN
+++ b/PLAN
@@ -29,8 +29,10 @@
   o  Ranking and unranking
   o  Ranking of permutations
   o  Ranking of k-permutations
-  o  Permutations with no fixed point
+  o  Restricted permutations
+  o  Hatcheck lady and other derangements
   .  ?? other objects ??
+  .  ?? general perspective ??
 
 *  Dynamic MST algorithms