April 2020 - GiNaC-devel

Power laws
by Vladimir V. Kisil 28 Jul '20

28 Jul '20

Dear All, I want to celebrate the 10th anniversary of this patch https://www.ginac.de/pipermail/ginac-devel/2009-October/001675.html by its re-submission. Since it was not objected since the original submission by anyone, it may be the time now to add this basic calculus-textbook rule to GiNaC. 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/ Jupyter (Colab): https://github.com/vvkisil/MoebInv-notebooks Jupyter (CodeOcean): https://codeocean.com/capsule/7952650/tree

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-656-g9237cb43
by Richard B. Kreckel 25 Apr '20

25 Apr '20

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via 9237cb43a19b8ed83d3409ce187e9c67d6d7046c (commit) from c3a7dda76e171bbd1e1418b3dab56df49920f721 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 9237cb43a19b8ed83d3409ce187e9c67d6d7046c Author: Vladimir V. Kisil <kisilv(a)maths.leeds.ac.uk> Date: Sat Apr 25 23:26:07 2020 +0200 [PATCH] Add default print function as the Python printing method. ----------------------------------------------------------------------- Summary of changes: ginac/integral.cpp | 1 + 1 file changed, 1 insertion(+) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Python printing method for integrals
by Vladimir V. Kisil 21 Apr '20

21 Apr '20

Dear All, To support PyGiNaC wrapper of GiNaC I propose to add the default printing method for integrals as Python output. One-line patch for this is attached. 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/ Jupyter: https://github.com/vvkisil/MoebInv-notebooks

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Release 1.7.9
by Richard B. Kreckel 11 Apr '20

11 Apr '20

Hi, GiNaC 1.7.9 has just been released. The changes are: * Fix unarchiving of overloaded functions. * Fix MinGW64 build. Happy Easter! -richy. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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[SCM] GiNaC -- a C++ library for symbolic computations tag, release_1-7-9, created. release_1-4-0-655-gc3a7dda7
by Richard B. Kreckel 11 Apr '20

11 Apr '20

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The tag, release_1-7-9 has been created at c3a7dda76e171bbd1e1418b3dab56df49920f721 (commit) - Log ----------------------------------------------------------------- commit c3a7dda76e171bbd1e1418b3dab56df49920f721 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Apr 11 01:20:22 2020 +0200 Finalize 1.7.9 release. ----------------------------------------------------------------------- hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-655-gc3a7dda7
by Richard B. Kreckel 11 Apr '20

11 Apr '20

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via c3a7dda76e171bbd1e1418b3dab56df49920f721 (commit) via 627de8efe53389269082bc0c908a10e7e09b9207 (commit) via 21393e73f6efc47b6a66a516bb94285625059c3a (commit) from 41e8c15b635c78bfbc677e7f1c00ce5f3ca97f1d (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit c3a7dda76e171bbd1e1418b3dab56df49920f721 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Apr 11 01:20:22 2020 +0200 Finalize 1.7.9 release. commit 627de8efe53389269082bc0c908a10e7e09b9207 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Apr 11 01:10:47 2020 +0200 Minor enhancements to tutorial. commit 21393e73f6efc47b6a66a516bb94285625059c3a Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Apr 11 01:01:47 2020 +0200 Add .gitignore files. ----------------------------------------------------------------------- Summary of changes: .gitignore | 27 +++++++++++++++++++++ NEWS | 4 +++ check/.gitignore | 63 ++++++++++++++++++++++++++++++++++++++++++++++++ config/.gitignore | 14 +++++++++++ doc/examples/.gitignore | 3 +++ doc/reference/.gitignore | 2 ++ doc/tutorial/.gitignore | 3 +++ doc/tutorial/ginac.texi | 14 ++++++----- ginac/.gitignore | 4 +++ ginac/version.h | 4 +-- ginsh/.gitignore | 7 ++++++ m4/.gitignore | 5 ++++ tools/.gitignore | 3 +++ 13 files changed, 145 insertions(+), 8 deletions(-) create mode 100644 .gitignore create mode 100644 check/.gitignore create mode 100644 config/.gitignore create mode 100644 doc/examples/.gitignore create mode 100644 doc/reference/.gitignore create mode 100644 doc/tutorial/.gitignore create mode 100644 ginac/.gitignore create mode 100644 ginsh/.gitignore create mode 100644 m4/.gitignore create mode 100644 tools/.gitignore hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-652-g41e8c15b
by Richard B. Kreckel 10 Apr '20

10 Apr '20

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via 41e8c15b635c78bfbc677e7f1c00ce5f3ca97f1d (commit) from aac4cec4d116f0b39daddb35181d1aa85297d4ba (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 41e8c15b635c78bfbc677e7f1c00ce5f3ca97f1d Author: Stefan Weinzierl <weinzierl(a)uni-mainz.de> Date: Fri Apr 10 18:01:28 2020 +0200 [PATCH] Fix zeta(x, s).evalf() when x and s aren't lists. ----------------------------------------------------------------------- Summary of changes: ginac/inifcns_nstdsums.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Patch numerical evaluation alternating Euler sums of depth 1
by Stefan Weinzierl 10 Apr '20

10 Apr '20

Hi, I came along a small bug in the numerical evaluation of alternating Euler sums of depth 1, when in the input no lists are used: > evalf(zeta({5},{1})); 1.0369277551433699263 > evalf(zeta(5,1)); 1.0369277551433699263 > evalf(zeta({5},{-1})); -0.972119770446909306 > evalf(zeta(5,-1)); zeta(5,-1) The attached patch fixes the last case, so zeta(5,-1) is now also evaluated numerically. Best wishes, Stefan

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Re: [GiNaC-devel] [GiNaC-list] archive/unarchive on functions with a variable number of arguments
by Stefan Weinzierl 10 Apr '20

10 Apr '20

Hi, the second argument in zeta(m,s) is supposed to be a sign, e.g. a number where either is_positive() or is_negative() is true, or a list of such signs. For example zeta(5,1) = sum_{j=1}^infty 1/j^5 zeta(5,-1) = sum_{j=1}^\infty (-1)^j/j^5 On the other hand, smybol x("x"); zeta(5,x) does not make any sense, if you want sum_{j=1}^infty x^j/j^5 use Li(5,x). If a sign is negative, the latex output is a bar over the corresponding first index, e.g. zeta(5,-1) prints as \zeta(\overline{5}). I suppose this is one reason for having the alternating Euler sums, as the printout \zeta(\overline{5}) is shorter than \mathrm{Li}_{5}(-1). Now, zeta2_print_latex checks only if is_negative() is true or false and prints a bar or not. One possibility could be to throw an exception early on, if for a sign neither is_positive() nor is_negative() is true. However, I have a tendency to leave this responsibility with the user. In particular I would not add extra code to the print routines. The print routines print out the functions correctly for legitime input, adding extra print code to print out illegitime input seems the wrong thing to do to me. Best wishes, Stefan

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-651-gaac4cec4
by Richard B. Kreckel 09 Apr '20

09 Apr '20

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via aac4cec4d116f0b39daddb35181d1aa85297d4ba (commit) via f7dc280e991f5151beed5aadd5d3641743e7dc9b (commit) from 3d5c30286146e192d4c22cbb989997cdfe306200 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit aac4cec4d116f0b39daddb35181d1aa85297d4ba Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu Apr 9 21:23:25 2020 +0200 Make C++ files in doc/examples/ compile again. commit f7dc280e991f5151beed5aadd5d3641743e7dc9b Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu Apr 9 20:44:41 2020 +0200 Remove obsolete CVSROOT directory. ----------------------------------------------------------------------- Summary of changes: CVSROOT/checkoutlist | 13 ------------- CVSROOT/commitinfo | 15 --------------- CVSROOT/config | 6 ------ CVSROOT/cvswrappers | 23 ----------------------- CVSROOT/editinfo | 21 --------------------- CVSROOT/loginfo | 26 -------------------------- CVSROOT/modules | 26 -------------------------- CVSROOT/notify | 12 ------------ CVSROOT/rcsinfo | 13 ------------- CVSROOT/taginfo | 20 -------------------- CVSROOT/verifymsg | 21 --------------------- doc/examples/archive1.cpp | 3 +-- doc/examples/lanczos.cpp | 1 + doc/examples/mystring.cpp | 4 ++-- 14 files changed, 4 insertions(+), 200 deletions(-) delete mode 100644 CVSROOT/checkoutlist delete mode 100644 CVSROOT/commitinfo delete mode 100644 CVSROOT/config delete mode 100644 CVSROOT/cvswrappers delete mode 100644 CVSROOT/editinfo delete mode 100644 CVSROOT/loginfo delete mode 100644 CVSROOT/modules delete mode 100644 CVSROOT/notify delete mode 100644 CVSROOT/rcsinfo delete mode 100644 CVSROOT/taginfo delete mode 100644 CVSROOT/verifymsg hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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