From kisilv at maths.leeds.ac.uk  Mon Feb  2 10:12:05 2015
From: kisilv at maths.leeds.ac.uk (Vladimir V. Kisil)
Date: Mon, 02 Feb 2015 09:12:05 +0000
Subject: [GiNaC-devel] Implicit derivation of functions (re-submission)
In-Reply-To: <20272.1422727662@math-pc2069.leeds.ac.uk>
References: <21759.1414578327@desktop.lan> <54A44347.4000606@in.terlu.de>
 <8645.1420211981@math-pc2069.leeds.ac.uk> <54A916A0.40707@in.terlu.de>
 <20272.1422727662@math-pc2069.leeds.ac.uk>
Message-ID: <9542.1422868325@math-pc2069.leeds.ac.uk>

	Dear All,

	A small improvement of the previous patch: it uses
  function::current_serial, which I did not noticed before.

  Best wishes,
  Vladimir
-- 
Vladimir V. Kisil     email: kisilv at maths.leeds.ac.uk
                        www: http://www.maths.leeds.ac.uk/~kisilv/
Book: Geometry of Mobius Transformations
http://www.worldscientific.com/worldscibooks/10.1142/p835
>>>>> On Sat, 31 Jan 2015 18:07:42 +0000, "Vladimir V. Kisil" <kisilv at maths.leeds.ac.uk> said:

    VVK> 	Dear All, I have modified the patch for derivatives of
    VVK> functions along the line Richard suggested:

    VVK>   * The method renamed to explicit derivative; 
    VVK> * Derivatives of Order() (and conjugate(), real_part(),
    VVK>   imag_part()) are handled  through it;
    VVK> * Exams are added to the check suit; * Tutorial is updated.
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From kisilv at maths.leeds.ac.uk  Sat Feb  7 11:36:16 2015
From: kisilv at maths.leeds.ac.uk (Vladimir V. Kisil)
Date: Sat, 07 Feb 2015 10:36:16 +0000
Subject: [GiNaC-devel] Micro patch in tutorial
Message-ID: <13318.1423305376@math-pc2069.leeds.ac.uk>

	Dear All,

	Another micro patch for tutorial. The index entry for
  clifford::get_metric() did not work, change it to get_metric(). 

  Best wishes,
  Vladimir
-- 
Vladimir V. Kisil     email: kisilv at maths.leeds.ac.uk
                        www: http://www.maths.leeds.ac.uk/~kisilv/
Book: Geometry of Mobius Transformations
http://www.worldscientific.com/worldscibooks/10.1142/p835
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From git at ginac.de  Sun Feb  8 21:00:00 2015
From: git at ginac.de (Richard B. Kreckel)
Date: Sun,  8 Feb 2015 21:00:00 +0100 (CET)
Subject: [GiNaC-devel] [SCM] GiNaC -- a C++ library for symbolic
	computations branch, master, updated. release_1-4-0-443-g1994570
Message-ID: <20150208200003.A596222091F@cebix.net>

This is an automated email from the git hooks/post-receive script. It was
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the project "GiNaC -- a C++ library for symbolic computations".

The branch, master has been updated
       via  1994570795185f89cc848843cc53664740d20fa0 (commit)
       via  aa2485821e68ea5f627d5753b41245a4cbd62fe3 (commit)
      from  fb9800befac02abddc754d051501ec446ae2b9bf (commit)

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- Log -----------------------------------------------------------------
commit 1994570795185f89cc848843cc53664740d20fa0
Author: Vladimir V. Kisil <kisilv at maths.leeds.ac.uk>
Date:   Sun Feb 8 20:53:55 2015 +0100

    Fixing index in tutorial.
    
    The index entry for clifford::get_metric() did not work, change it to get_metric().
    
    Signed-off-by: Vladimir V. Kisil <kisilv at maths.leeds.ac.uk>

commit aa2485821e68ea5f627d5753b41245a4cbd62fe3
Author: Vladimir V. Kisil <kisilv at maths.leeds.ac.uk>
Date:   Sun Feb 8 20:50:51 2015 +0100

    Explicit derivation of functions.
    
    Some function cannot be cleanly differentiated through the chain rule.
    For example, it is natural to define derivative of the absolute value as
    
    (abs(f))'=(f'*f.conjugate()+f*f'.conjugate())/2/abs(f)
    
    This patch adds a possibility to define derivatives of functions in this way.
    In particular the derivative of abs(), Order(), real_part(), imag_part() and
    conjugate() are defined.
    
    For example, conjugate of a derivative with respect of a real symbol
    If x is real then U.diff(x)-I*V.diff(x) represents both
    conjugate(U+I*V).diff(x) and conjugate((U+I*V).diff(x))
    Thus in this patch we use the rule
    
    conjugate(f)'=conjugate(f')
    
    for a derivative with respect to the real symbol.
    
    Signed-off-by: Vladimir V. Kisil <kisilv at maths.leeds.ac.uk>

-----------------------------------------------------------------------

Summary of changes:
 check/exam_inifcns.cpp  | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 doc/tutorial/ginac.texi | 28 ++++++++++++++++++---
 ginac/function.cppy     | 33 +++++++++++++++++++++----
 ginac/function.hppy     |  6 +++++
 ginac/function.py       |  2 +-
 ginac/inifcns.cpp       | 54 +++++++++++++++++++++++++++++++++++++++-
 6 files changed, 178 insertions(+), 11 deletions(-)


hooks/post-receive
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GiNaC -- a C++ library for symbolic computations


From kreckel at ginac.de  Sun Feb 15 23:12:16 2015
From: kreckel at ginac.de (Richard B. Kreckel)
Date: Sun, 15 Feb 2015 23:12:16 +0100
Subject: [GiNaC-devel] test
Message-ID: <54E119C0.8070100@ginac.de>

please ignore


From mvala at saske.sk  Thu Feb 26 22:37:15 2015
From: mvala at saske.sk (Martin Vala)
Date: Thu, 26 Feb 2015 22:37:15 +0100
Subject: [GiNaC-devel] compile_ex with HAVE_LIBDL with cmake build system
Message-ID: <54EF920B.1000405@saske.sk>

Dear ginac dev,

i would like to use function compile_ex and it is not possible to set 
using cmake build system.

I added some cmake configuration and all changes are in tarball 
http://alice.saske.sk/mvala/ginac/ginac-1.6.3.tar.bz2

Can you add this to 1.6.4? It would help me a lot.

Thanks

Ciao

Martin


From kisilv at maths.leeds.ac.uk  Sat Feb 28 21:59:36 2015
From: kisilv at maths.leeds.ac.uk (Vladimir V. Kisil)
Date: Sat, 28 Feb 2015 20:59:36 +0000
Subject: [GiNaC-devel] Revised patch: Power transformation for real base and
	positive exponent
Message-ID: <14170.1425157176@math-pc2069.leeds.ac.uk>

	Dear All,

	I am attaching the revised patch to power::expand(), which make
  the transformation:

  (x*p)^c --> x^c * p^c, if p>0 and c is real

  This seems to be helpful in many cases. A corresponding check is added
  as well. 

  Best wishes,
  Vladimir
-- 
Vladimir V. Kisil                 http://www.maths.leeds.ac.uk/~kisilv/
  Book:     Geometry of Mobius Transformations     http://goo.gl/EaG2Vu
  Software: Geometry of cycles          http://moebinv.sourceforge.net/
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