Christian Bauer [Fri, 4 May 2001 23:46:52 +0000 (23:46 +0000)]
- more clifford checks
- archive checks has a symbol with a LaTeX name
Christian Bauer [Fri, 4 May 2001 23:46:28 +0000 (23:46 +0000)]
documentation and grammar updates
Richard Kreckel [Fri, 4 May 2001 23:29:42 +0000 (23:29 +0000)]
* add::coeff(): don't epvector::reserve() more terms than we'll actually
need and don't epvector::push_back() all those _ex0()'s into coeffseq.
Richard Kreckel [Thu, 3 May 2001 23:50:51 +0000 (23:50 +0000)]
* Fix incompatibilities with recent versions of libreadline by having
configure find out the version and then doing ugly things with #ifdef.
Richard Kreckel [Thu, 3 May 2001 23:50:48 +0000 (23:50 +0000)]
* Fix incompatibilities with recent versions of libreadline by having
configure find out the version and then doing ugly things with #ifdef.
* config.*: updates from upstream.
Richard Kreckel [Sat, 28 Apr 2001 22:02:15 +0000 (22:02 +0000)]
* Just for the record: this is what has been used for building.
Christian Bauer [Thu, 26 Apr 2001 19:36:07 +0000 (19:36 +0000)]
- dirac_trace() handles arbitrary expressions (even unexpanded), including
gamma5
- implemented color_trace()
- eps0123() creates a 4-dimensional epsilon tensor without checking the
indices (so they may be D-dimensional); this may become a different class
soon, but for now all the implemented properties of the standard epsilon
tensor also apply to eps0123
Christian Bauer [Thu, 26 Apr 2001 19:33:22 +0000 (19:33 +0000)]
added more trace checks
Christian Bauer [Wed, 25 Apr 2001 20:41:13 +0000 (20:41 +0000)]
dirac_trace() can handle arbitrary gamma strings without gamma5. The only
remaining unimplemented case is now Tr[gamma5 S_2n]
Christian Bauer [Wed, 25 Apr 2001 20:40:35 +0000 (20:40 +0000)]
added more trace checks
Richard Kreckel [Tue, 24 Apr 2001 23:53:52 +0000 (23:53 +0000)]
* Minor packaging fixes.
* Pushing towards version 0.8.2-1.
Richard Kreckel [Tue, 24 Apr 2001 19:37:24 +0000 (19:37 +0000)]
* Cint fix. It looks like the hacks are going to go away really soon,
after some recent work by Masaharu.
Richard Kreckel [Tue, 24 Apr 2001 19:35:39 +0000 (19:35 +0000)]
* Example: Don't confuse users with _ex0().
Richard Kreckel [Tue, 24 Apr 2001 19:35:20 +0000 (19:35 +0000)]
* Push towards 0.8.2.
Christian Bauer [Tue, 24 Apr 2001 17:22:09 +0000 (17:22 +0000)]
- added get_representation_label()
- clifford contractions honor repr. label
- first implementation of dirac_trace(), works with 0..3 clifford objects
Christian Bauer [Tue, 24 Apr 2001 17:21:16 +0000 (17:21 +0000)]
added first trace check
Richard Kreckel [Mon, 23 Apr 2001 19:50:23 +0000 (19:50 +0000)]
\18* class matrix: solve() doesn't call algorithms redundantly any more and
inverse() falls back to solve() which works in more general cases.
Richard Kreckel [Mon, 23 Apr 2001 19:50:16 +0000 (19:50 +0000)]
* class matrix: solve() doesn't call algorithms redundantly any more and
inverse() falls back to solve() which works in more general cases.
Christian Bauer [Fri, 20 Apr 2001 23:09:09 +0000 (23:09 +0000)]
- degree(), ldegree(), coeff(), lcoeff(), tcoeff() and collect() work with
non-symbols as the second argument
- collect_distributed() produces result in distributed form (second argument
should be a list of symbols)
Christian Bauer [Fri, 20 Apr 2001 23:06:55 +0000 (23:06 +0000)]
- color/clifford objects have representation label to distinguish elements
of different algebras; objects with different labels commute with each
other
- dirac_one() -> dirac_ONE()
- added gamma5 clifford objects which is constructed by dirac_gamma5()
- clifford::simplify_ncmul() anticommutes gamma5's to the front and removes
squares of gamma5
- the argument to collect() can be a list of objects in which case the
result is either a recursively collected polynomial, or a polynomial in
a distributed form with terms like coeff*x1^e1*...*xn^en, as specified by
the second argument to collect(). For example (ginsh):
> f=a*x-x+a*x*y+x*y+a*x*y^2-2*x*y^2+y^2;
a*x+y*a*x+y^2*a*x+y^2-x+y*x-2*y^2*x
> collect(f,x);
(-1+y+y^2*a+y*a+a-2*y^2)*x+y^2
> collect(f,y);
a*x-x+y^2*(1+a*x-2*x)+y*(a*x+x)
> collect(f,[x,y]);
(-1+y*(1+a)+y^2*(-2+a)+a)*x+y^2
> collect(f,[y,x]);
(-1+a)*x+y*(1+a)*x+(1+(-2+a)*x)*y^2
> collect_distributed(f,[x,y]);
(-1+a)*x+y^2*(-2+a)*x+y*(1+a)*x+y^2
Christian Bauer [Fri, 20 Apr 2001 23:03:43 +0000 (23:03 +0000)]
- dirac_one() -> dirac_ONE()
- more clifford checks
Christian Bauer [Fri, 20 Apr 2001 23:03:25 +0000 (23:03 +0000)]
documentation update
Richard Kreckel [Thu, 19 Apr 2001 00:41:18 +0000 (00:41 +0000)]
* fixed some mindboggling tremendous superhuge gigantic #*@$&! memory leaks.
Richard Kreckel [Wed, 18 Apr 2001 19:30:21 +0000 (19:30 +0000)]
* color.cpp: remove duplicated default args.
* numeric.cpp: insert some missing cln:: namespace decls.
Why did this ever work?
* structure.cpp, structure.h: adjust to the new print scheme.
Richard Kreckel [Mon, 16 Apr 2001 20:27:58 +0000 (20:27 +0000)]
* Now this four-package split-up is gonna get in. Promised.
Richard Kreckel [Mon, 16 Apr 2001 20:25:21 +0000 (20:25 +0000)]
* Finalization for 0.8.1.
Richard Kreckel [Mon, 16 Apr 2001 20:24:53 +0000 (20:24 +0000)]
* Documented print_latex.
Richard Kreckel [Mon, 16 Apr 2001 20:24:27 +0000 (20:24 +0000)]
* Don't print '*' in LaTeX mode.
Richard Kreckel [Mon, 16 Apr 2001 20:24:09 +0000 (20:24 +0000)]
* Still some std:: missing...
Richard Kreckel [Sun, 15 Apr 2001 00:28:38 +0000 (00:28 +0000)]
* Added example about series expansion.
Richard Kreckel [Sun, 15 Apr 2001 00:28:18 +0000 (00:28 +0000)]
* basic::collec() never worked correctly on non-polynomials till now.
We simply correct for the missing terms, which makes it at least
algebraically correct (suggested by Pearu Peterson).
* Added support to print out LaTeX-style, based on some work by Stefan
Weinzierl:
- print.h: added a class print_latex().
- function.pl: added function_options::latex_name() because there was
no good way of setting that name before.
- inifncs*.cpp: use it.
- *.cpp: switch to see if print_context is actually print_latex and
then change the style.
* Fixed some stupid bugs in sections that were #define'd away for gcc-2.95.
Richard Kreckel [Sun, 15 Apr 2001 00:22:44 +0000 (00:22 +0000)]
* INSTALL: adjusted Cint status.
* document change in .collect().
Richard Kreckel [Fri, 13 Apr 2001 19:26:29 +0000 (19:26 +0000)]
* Preparing for 0.8.1.
Richard Kreckel [Fri, 13 Apr 2001 18:46:23 +0000 (18:46 +0000)]
* Removed obsolete exponent marker in float output example.
Richard Kreckel [Fri, 13 Apr 2001 18:27:34 +0000 (18:27 +0000)]
* add::print() shouldn't put parens around overall_coeff.
Richard Kreckel [Fri, 13 Apr 2001 18:26:46 +0000 (18:26 +0000)]
* Remove bogus counter in sqrfree_yun().
Christian Bauer [Tue, 10 Apr 2001 23:04:24 +0000 (23:04 +0000)]
archive property example uses propinfovector
Christian Bauer [Tue, 10 Apr 2001 18:30:21 +0000 (18:30 +0000)]
added basic::get_precedence()
Richard Kreckel [Tue, 10 Apr 2001 13:47:03 +0000 (13:47 +0000)]
* introduced typedef propinfovector in order to please Cint.
Christian Bauer [Mon, 9 Apr 2001 23:32:23 +0000 (23:32 +0000)]
adapted to change symbol::getname() -> symbol::get_name()
Christian Bauer [Mon, 9 Apr 2001 21:33:48 +0000 (21:33 +0000)]
added functions to retrieve the properties stored in archive objects
outside of unarchive(), for printing or debugging purposes
Christian Bauer [Mon, 9 Apr 2001 21:33:17 +0000 (21:33 +0000)]
- updated to reflect the extended possibilities of subs(), (l)degree(),
(l/t)coeff() and collect()
- added examples for specialized expression output by tree-traversal and
with the aid of archives
Christian Bauer [Mon, 9 Apr 2001 21:30:32 +0000 (21:30 +0000)]
documentation update
Christian Bauer [Mon, 9 Apr 2001 01:08:35 +0000 (01:08 +0000)]
- renamed
function::getserial() -> function::get_serial()
symbol::setname() -> symbol::set_name()
symbol::getname() -> symbol::get_name()
for consistency (since the interface has changed anyway)
- added pseries::get_var() and pseries::get_point()
Christian Bauer [Sat, 7 Apr 2001 20:58:09 +0000 (20:58 +0000)]
added function::get_name() to return a function's print name
Christian Bauer [Fri, 6 Apr 2001 23:39:47 +0000 (23:39 +0000)]
something like 2/3*a is no longer printed as (2/3)*a
Christian Bauer [Fri, 6 Apr 2001 23:39:17 +0000 (23:39 +0000)]
updated with respect to new print() method
Christian Bauer [Fri, 6 Apr 2001 23:03:15 +0000 (23:03 +0000)]
printtree() -> print(print_tree())
Christian Bauer [Fri, 6 Apr 2001 23:02:58 +0000 (23:02 +0000)]
- replaced the various print*() member functions by a single print() that
takes a print_context object that determines the output formatting; this
should make it easier to add more output types
- print_tree output of indexed objects looks better
Christian Bauer [Fri, 6 Apr 2001 23:02:12 +0000 (23:02 +0000)]
added check for archiving system
Christian Bauer [Fri, 6 Apr 2001 23:02:02 +0000 (23:02 +0000)]
documentation update
Christian Bauer [Thu, 5 Apr 2001 21:02:26 +0000 (21:02 +0000)]
subs() performs "syntactic substitution" as in Maple; you can substitute
any object by any other object (even numerics) but only when the object
subs() is called on exactly matches an object on the left-hand side of the
substitution list; expairseq still doesn't substitute its numeric coefficients
so substituting numerics will not replace them in all occurences (this
shouldn't matter, though)
Christian Bauer [Thu, 5 Apr 2001 20:58:36 +0000 (20:58 +0000)]
documentation update
Christian Bauer [Thu, 5 Apr 2001 19:45:05 +0000 (19:45 +0000)]
- subs() can be used to substitute functions, tensors and indexed objects
- op(0) of an idx object returns the index value; a nice side-effect of
this is that idx'es no longer all have the same hash value
- added checks for clifford class
Christian Bauer [Thu, 5 Apr 2001 19:44:47 +0000 (19:44 +0000)]
- subs() can be used to substitute functions, tensors and indexed objects
- op(0) of an idx object returns the index value; a nice side-effect of
this is that idx'es no longer all have the same hash value
Christian Bauer [Thu, 5 Apr 2001 00:39:51 +0000 (00:39 +0000)]
documentation update
Christian Bauer [Thu, 5 Apr 2001 00:37:46 +0000 (00:37 +0000)]
degree(), ldegree(), coeff(), tcoeff(), lcoeff() and collect() work with
functions (you can collect by powers of sin(x) etc.)
Christian Bauer [Thu, 5 Apr 2001 00:16:02 +0000 (00:16 +0000)]
simplify_indexed() will re-expand the expression and re-run the
simplification if a contraction in a product resulted in a factor that
is a sum or a product itself; so e.g. gamma~mu*gamma~nu*gamma.nu*gamma.mu
will return dim^2*ONE without having to run simplify_indexed() twice
Richard Kreckel [Wed, 4 Apr 2001 21:51:19 +0000 (21:51 +0000)]
* removed some obsolete stuff.
Christian Bauer [Mon, 2 Apr 2001 20:57:32 +0000 (20:57 +0000)]
degree(), ldegree(), coeff(), lcoeff(), tcoeff() and collect() can now
be used with constants and indexed expressions as well, so you can use
it to collect by powers of Pi or find the coefficient of gamma~0.
Limitations:
- it only works with symbols, constants and indexed expressions;
trying to find the coefficient of, e.g., "x^2" or "x+y" won't work
- it does not know about dummy index summations; the coefficient of
gamma~0 in p.mu*gamma~mu should be p.0 but is returned as 0
- using the functions on elements of noncommutative products might
return wrong or surprising results
Christian Bauer [Fri, 30 Mar 2001 21:11:04 +0000 (21:11 +0000)]
the unsigned number 128 was stored incorrectly (0x80 instead of 0x80 0x01)
Christian Bauer [Fri, 30 Mar 2001 18:14:32 +0000 (18:14 +0000)]
- added Clifford contractions:
gamma~mu*gamma~alpha*gamma~beta*gamma.mu
gamma~mu*gamma~alpha*gamma~beta*gamma~delta*gamma.mu
- detection of free indices of the complete product in
simplify_indexed_product() could go wrong if contractions resulted in
composite expressions
Christian Bauer [Fri, 30 Mar 2001 17:34:35 +0000 (17:34 +0000)]
- dummy index recognition in products was flawed: A.i.i*B.j.j would be
treated as a scalar product of A and B, A.j.j.i.i*B.k.l would be 0
if A was symmetric and B antisymmetric etc.
- removed redundant code for handling d.akl*f.akl contraction; this is
handled by simplify_indexed() itself since it is a contraction of a
symmetric with an antisymmetric tensor
Christian Bauer [Fri, 30 Mar 2001 17:32:02 +0000 (17:32 +0000)]
added checks for bugs in GiNaC 0.8.0
Christian Bauer [Thu, 29 Mar 2001 20:56:45 +0000 (20:56 +0000)]
added checks for color objects
Christian Bauer [Thu, 29 Mar 2001 20:56:32 +0000 (20:56 +0000)]
- added Clifford algebra unity element
- superfluous unity elements are removed from Clifford and color strings
- added Clifford contractions:
gamma~mu*gamma.mu
gamma~mu*gamma~alpha*gamma.mu
- added color contractions:
d.aac
d.abc*d.abc
d.akl*d.bkl
d.abc*f.abc
d.akl*f.bkl
f.abc*f.abc
f.akl*f.bkl
- delta tensor and color structure constants can be evaluated numerically
- color_T(), color_d() and color_f() check their arguments
- added a couple of utility functions to idx.*
- simplify_indexed() doesn't crash any more when used on expressions containing
noncommutative products
Christian Bauer [Thu, 29 Mar 2001 20:48:17 +0000 (20:48 +0000)]
- introduced macros to shorten the source files
- added exam_color()
Christian Bauer [Wed, 28 Mar 2001 01:25:32 +0000 (01:25 +0000)]
skeleton implementation of new color class
Christian Bauer [Wed, 28 Mar 2001 01:21:43 +0000 (01:21 +0000)]
restored deleted files
Christian Bauer [Wed, 28 Mar 2001 00:36:37 +0000 (00:36 +0000)]
- added skeleton implementation of color and clifford classes (don't bother
trying it, it doesn't work yet)
- some macros in utils.h (DEFAULT_*) provide shorthands for implementing
many required class member functions
Christian Bauer [Tue, 27 Mar 2001 18:17:25 +0000 (18:17 +0000)]
contraction of symmetric with antisymmetric tensor over more than one index
is zero
Christian Bauer [Tue, 27 Mar 2001 18:17:06 +0000 (18:17 +0000)]
added check for contraction of epsilon with symmetric tensor
Richard Kreckel [Sat, 24 Mar 2001 22:09:41 +0000 (22:09 +0000)]
* Documented sqrfree.
Richard Kreckel [Sat, 24 Mar 2001 22:09:30 +0000 (22:09 +0000)]
* Date inserted.
Richard Kreckel [Fri, 23 Mar 2001 19:27:20 +0000 (19:27 +0000)]
* Tidied some old crap.
Christian Bauer [Fri, 23 Mar 2001 18:36:41 +0000 (18:36 +0000)]
fixed memory leaks in lst_to_matrix() and diag_matrix()
Christian Bauer [Fri, 23 Mar 2001 17:50:01 +0000 (17:50 +0000)]
lst_to_matrix() takes a "lst &" instead of an "ex &"
Christian Bauer [Fri, 23 Mar 2001 17:49:54 +0000 (17:49 +0000)]
- simplify_indexed() simplifies c*(M).i.j -> (M').i.j (c: numeric, M: matrix)
with M'=c*M
- new member function matrix::mul(const numeric &other) to multiply matrix
with scalar
- lst_to_matrix() takes a "lst &" instead of an "ex &"
- added constructor of matrix from flat list
- added function diag_matrix() to construct matrix from list of diagonal
elements
Christian Bauer [Fri, 23 Mar 2001 17:46:44 +0000 (17:46 +0000)]
simplify_indexed() recognizes linear combinations of matrices with numeric
coefficients
Christian Bauer [Fri, 23 Mar 2001 17:46:12 +0000 (17:46 +0000)]
used new diag_matrix() and matrix from lst constructor
Christian Bauer [Fri, 23 Mar 2001 17:45:59 +0000 (17:45 +0000)]
documentation update
Richard Kreckel [Thu, 22 Mar 2001 21:24:32 +0000 (21:24 +0000)]
* Eliminated overloaded operator% for noncommunistic objects for good.
End of story. There was just too much risk involved in somebody not
caring enough whether there are noncommutatating objects inside
expressions to be multiplied and it could potentially end up in people
using operator% instead of operator* all the time, just to be safe.
In any case, it was our firm believe that noncommutatividity is a
property of the class objects belong to and hence of the objects and
not at all of the sign to symbol the object (as Maple, Reduce and others
want to make us believe). Finally we found out how to code operator*
so that it handles both cases without any performance loss. It couldn't
be less intrusive! There is no measurable performance degradation.
(Except perhaps for the tgamma-expansion which seems to show some 3%
loss while others mysteriously become somewhat faster -- my brain is
melting.) Enough, now...
Richard Kreckel [Thu, 22 Mar 2001 20:09:25 +0000 (20:09 +0000)]
* configure.in, cint/run_exams.cpp, cint/ginaccint.cpp: adjusted the
--with-cint logic so ginaccint may run without a preset $CINTSYSDIR
(in case of a clean system-wide installation as opposed to the tool-
centric installation). cint/Makefile.makecint generation does not
yet work in this case, makecint needs a tiny upstream bugfix.
Richard Kreckel [Thu, 22 Mar 2001 20:09:22 +0000 (20:09 +0000)]
* INSTALL: reflect Cint status.
* configure.in, cint/run_exams.cpp, cint/ginaccint.cpp: adjusted the
--with-cint logic so ginaccint may run without a preset $CINTSYSDIR
(in case of a clean system-wide installation as opposed to the tool-
centric installation). cint/Makefile.makecint generation does not
yet work in this case, makecint needs a tiny upstream bugfix.
Christian Bauer [Thu, 22 Mar 2001 18:52:08 +0000 (18:52 +0000)]
sums of indexed matrices are now possible
Christian Bauer [Thu, 22 Mar 2001 18:51:48 +0000 (18:51 +0000)]
added another relativistic electrodynamics check (energy density and Poynting
vector)
Christian Bauer [Thu, 22 Mar 2001 18:51:15 +0000 (18:51 +0000)]
bumped version number to 0.8.0
Richard Kreckel [Wed, 21 Mar 2001 21:07:29 +0000 (21:07 +0000)]
* tensdelta is an atomic class.
Christian Bauer [Wed, 21 Mar 2001 21:03:05 +0000 (21:03 +0000)]
- the tensor returned by metric_tensor() is symmetric
- (c*x)~mu with c being a number automatically gets converted to c*x~mu
Christian Bauer [Wed, 21 Mar 2001 21:01:58 +0000 (21:01 +0000)]
the tensor returned by metric_tensor() is symmetric
Richard Kreckel [Tue, 20 Mar 2001 21:27:13 +0000 (21:27 +0000)]
* Adjusted to current class shuffling.
Christian Bauer [Mon, 19 Mar 2001 18:42:39 +0000 (18:42 +0000)]
added tutorial section about indexed objects
Christian Bauer [Fri, 16 Mar 2001 18:08:48 +0000 (18:08 +0000)]
an indexed "0" is just a plain "0"
Richard Kreckel [Thu, 15 Mar 2001 21:10:48 +0000 (21:10 +0000)]
* Exam some simple square free factorizations.
Richard Kreckel [Thu, 15 Mar 2001 20:42:14 +0000 (20:42 +0000)]
* added missing std::
Richard Kreckel [Wed, 14 Mar 2001 23:09:51 +0000 (23:09 +0000)]
* add missing std::.
Christian Bauer [Wed, 14 Mar 2001 23:05:38 +0000 (23:05 +0000)]
added checks involving epsilon tensor
Christian Bauer [Wed, 14 Mar 2001 23:05:10 +0000 (23:05 +0000)]
added predefined epsilon tensor
Christian Bauer [Wed, 14 Mar 2001 23:01:06 +0000 (23:01 +0000)]
documentation update
Richard Kreckel [Wed, 14 Mar 2001 21:31:28 +0000 (21:31 +0000)]
* ex.h: add docu.
* normal.cpp: make sqrfree_yun() static.
* basic.cpp (compare): slightly clarify syntax.