Clifford get_metric(i,j) again defaults to symmetric indices.

[ginac.git] / NEWS

diff --git a/NEWS b/NEWS
index a560063f5b3fbb6fbc35b5f11ee3f9f69a275748..5e389ce79d9cd06034b36b49d2559f6495f0793e 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,10 +1,61 @@
 This file records noteworthy changes.
 
-1.3.0 (<insert date>)
+1.3.0 (19 October 2004)
+* The Clifford classes have been generalized to allow working with Clifford
+  algebras generated by arbitrary symmetric tensors or matrices. Also, a lot
+  of new functions for Clifford algebras have been added, including
+  automorphisms and Moebius transformations. [V. Kisil]
+* Added some basic symbolic and numeric integration facilities. [C. Dams]
+* The multiple polylogarithm Li() now evaluates numerically for arbitrary
+  arguments.
+* New functions G(a,y) and G(a,s,y) added (another notation for multiple
+  polylogarithms).
+
+1.2.4 (12 October 2004)
+* Added ex::unitcontprim() to compute the unit, content, and primitive parts
+  of a polynomial in one go.
+* binomial(n, k) evaluates for non-integer arguments n.
+* Li(2,x) now evaluates for +-I.
+* Optimized Li(2,x).
+* Fixed bug in Li(n,x) (if Li(2,x) was calculated with high precision the
+  enlargement of the look-up table caused a segmentation fault).
+* Fixed another bug in the series expansion of powers, and a bug in
+  power::info().
+
+1.2.3 (13 August 2004)
+* Added variants of dirac_trace() and color_trace() that take the trace over
+  more than one representation label by specifying a set or list of labels.
+* diracgamma::contract_with() uses Chisholm identities in 4 dimensions to
+  produce more compact results.
+* Fixed a bug in the series expansion of powers.
+* The --enable-html-doc and --enable-ps-doc configure options are gone.
+  Documentation in HTML, DVI, PostScript, and PDF formats is now built with
+  "make html", "make dvi", "make ps", and "make pdf", respectively. The only
+  documentation that gets built by default are the tutorial in .info format
+  and the manpages.
+
+1.2.2 (3 August 2004)
+* Added const_preorder_iterator and const_postorder_iterator classes (and
+  associated methods ex::pre/postorder_begin/end()) providing tree traversal
+  with iterators.
+* Fixed the LaTeX output of the varidx class.
+* Fixed bugs in series expansion and complex conjugation.
+* (p.i*p.i).get_free_indices() returns the correct result () instead of (.i).
+* Symbolic functions without any eval(), evalf() etc. functions now work
+  properly.
+* integer_content(), content(), and primpart() now also work for polynomials
+  with rational coefficients (calculating the LCM of coefficients'
+  denominators).
+* Added method matrix::rank().
+* Added function resultant().
+* Added integer_content() function to ginsh.
+
+1.2.1 (23 April 2004)
 * Fixed infinite recursion in atan2_evalf() and improved atan2_eval().
 * Added automatic evaluations for trigonometric functions with negative
   arguments (e.g. sin(-2) -> -sin(2)).
 * Fixed a static initialization order goof-up.
+* Fixed various bugs in series expansion.
 
 1.2.0 (19 March 2004)
 * Added a structure<T> template class for the easy creation of user-defined
@@ -289,8 +340,8 @@ This file records noteworthy changes.
 * Supplement some (now deprecated) macros by inlined template functions:
   - is_of_type(foo, type) -> is_a<type>(foo)
   - is_ex_of_type(foo, type) -> is_a<type>(foo)
-  - is_exaclty_of_type(foo, type) -> is_exaclty_a<type>(foo)
-  - is_ex_exaclty_of_type(foo, type) -> is_exaclty_a<type>(foo)
+  - is_exactly_of_type(foo, type) -> is_exactly_a<type>(foo)
+  - is_ex_exactly_of_type(foo, type) -> is_exactly_a<type>(foo)
   - ex_to_foobar(baz)  ->  ex_to<foobar>(baz)
 * rem(c, p[x], x) (c: numeric, p[x]: polynomial) erroneously returned p[x]
   instead of c.