* Insert date and bump patchlevel.

[ginac.git] / NEWS

diff --git a/NEWS b/NEWS
index c327cbdea566f97dbd1e4faf14288a6e052ffa1e..2d6b3c758f2ae59e78d3c081218c7d041523e8b6 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,20 @@
 This file records noteworthy changes.
 
+1.0.9 (11 June 2002)
+* simplify_indexed() now raises/lowers dummy indices to canonicalize the index
+  variance. This allows some simplifications that weren't possible before,
+  like eps~a.b~c~d*X.a*X~b -> 0 and X.a~a-X~a.a -> 0.
+* Implemented relational::subs().
+* Fixed bug in simplify_ncmul() for clifford objects.
+
+1.0.8 (31 March 2002)
+* Improvements in memory usage of the expand() methods.
+
+1.0.7 (18 March 2002)
+* Fixed LaTeX output of indexed and matrix objects.
+* Fixed matrix::pow(n) for n==0 and added helper functions to create unit
+  matrices "ex unit_matrix(unsigned, unsigned)".
+
 1.0.6 (4 March 2002)
 * "(x+1).subs(x==x-1)" now returns the correct result "x" instead of "x-1".