documentation update

[ginac.git] / NEWS

diff --git a/NEWS b/NEWS
index d08e730e48711ef795f7a6e337820f202b3dcf0b..d5d29512a9ccdf74aaebe4d2f1eca3860781982a 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,10 +1,17 @@
 This file records noteworthy changes.
 
 0.8.4 (<date>)
+* In the output and in ginsh, lists are now delimited by { } braces, and
+  matrices are delimited by single [ ] brackets.
 * simplify_indexed() renames dummy indices so, e.g., "a.i*a.i+a.j*a.j" gets
   simplified to "2*a.i*a.i".
-* Added canonicalize_clifford() function that can be helpful when comparing
-  expressions containing Dirac matrices.
+* New functions/methods:
+   - canonicalize_clifford() (helpful when comparing expressions containing
+     Dirac matrices)
+   - symmetrize() and antisymmetrize()
+   - numer_denom() (return numerator and denominator)
+   - map() (apply function to subexpressions)
+   - evalm() (evaluate sums and products of matrices)
 * Added a new function match() for performing pattern matching. subs() and
   has() also accept patterns as arguments. A pattern can be any expression,
   optionally containing wildcard objects. These are constructed with the
@@ -12,6 +19,8 @@ This file records noteworthy changes.
   and in ginsh.
 * Fixed possible crash when calling subs() on expressions with non-commutative
   products.
+* Positive integer powers of non-commutative expressions are automatically
+  expanded.
 
 0.8.3 (11 May 2001)
 * color and clifford classes are functional and documented.
@@ -19,7 +28,7 @@ This file records noteworthy changes.
 * Predefined spinor metric tensor (created by spinor_metric()).
 * Symbols can have a LaTeX name, e.g. symbol s("s", "\\sigma");
 * LaTeX output of indexed objects is much nicer.
-* Fix some build-problems (with recent libreadline).
+* Fixed some build problems (with recent libreadline).
 * Semantics of arithmetic operators now follows the C++ rules more strictly.
 
 0.8.2 (24 April 2001)