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CVS commit: pkgsrc/math/py-sympy
Module Name: pkgsrc
Committed By: wen
Date: Sun Dec 2 12:33:24 UTC 2012
pkgsrc/math/py-sympy: Makefile PLIST distinfo
Update to 0.7.2
Release Notes for 0.7.2New Page Edit Page Page History
These are the release notes for SymPy 0.7.2. SymPy 0.7.2 was released on
October 16, 2012.
Python 3 support
SymPy now supports Python 3. The officially supported versions are 3.2 and 3.3,
but 3.1 should also work in a pinch. The Python 3-compatible tarballs will be
provided separately, but it is also possible to download Python 2 code and
convert it manually, via the bin/use2to3 utility. See the README for more
All SymPy tests pass in recent nightlies of PyPy, and so it should have full
support as of the next version after 1.9.
A new module called Combinatorics was added which is the result of a successful
GSoC project. It attempts to replicate the functionality of Combinatorica and
currently has full featured support for Permutations, Subsets, Gray codes and
In another GSoC project, facilities from computational group theory were added
to the combinatorics module, mainly following the book "Handbook of
computational group theory". Currently only permutation groups are supported.
The main functionalities are: basic properties (orbits, stabilizers, random
elements...), the Schreier-Sims algorithm (three implementations, in increasing
speed: with Jerrum's filter, incremental, and randomized (Monte Carlo)),
backtrack searching for subgroups with certain properties.
A new module called meijerint was added, which is also the result of a
successful GSoC project. It implements a heuristic algorithm for (mainly)
definite integration, similar to the one used in Mathematica. The code is
automatically called by the standard integrate() function. This new algorithm
allows computation of important integral transforms in many interesting cases,
so helper functions for Laplace, Fourier and Mellin transforms were added as
A new module called stats was added. This introduces a RandomSymbol type which
can be used to model uncertainty in expressions.
A new matrix submodule named expressions was added. This introduces a
MatrixSymbol type which can be used to describe a matrix without explicitly
stating its entries. A new family of expression types were also added:
Transpose, Inverse, Trace, and BlockMatrix. ImmutableMatrix was added so that
explicitly defined matrices could interact with other SymPy expressions.
A number of new sets were added including atomic sets like FiniteSet, Reals,
Naturals, Integers, UniversalSet as well as compound sets like ProductSet and
TransformationSet. Using these building blocks it is possible to build up a
great variety of interesting sets.
A physics submodule named machanics was added which assists in formation of
equations of motion for constrained multi-body systems. It is the result of 3
GSoC projects. Some nontrivial systems can be solved, and examples are provided.
Density operator module has been added. The operator can be initialized with
generic Kets or Qubits. The Density operator can also work with TensorProducts
as arguments. Global methods are also added that compute entropy and fidelity
of states. Trace and partial-trace operations can also be performed on these
To enable partial trace operations a Tr module has been added to the core
library. While the functionality should remain same, this module is likely to
be relocated to an alternate folder in the future. One can currently also use
sympy.core.Tr to work on general trace operations, but this module is what is
needed to work on trace and partial-trace operations on any
The Density operators, Tr and Partial trace functionality was implemented as
part of student participation in GSoC 2012
Expanded angular momentum to include coupled-basis states and product-basis
states. Operators can also be treated as acting on the coupled basis (default
behavior) or on one component of the tensor product states. The methods for
coupling and uncoupling these states can work on an arbitrary number of states.
Representing, rewriting and applying states and operators between bases has
A new module agca was started which seeks to support computations in
commutative algebra (and eventually algebraic geometry) in the style of
Macaulay2 and Singular. Currently there is support for computing Groebner bases
of modules over a (generalized) polynomial ring over a field. Based on this,
there are algorithms for various standard problems in commutative algebra,
e.g., computing intersections of submodules, equality tests in quotient rings,
A new plotting module has been added which uses Matplotlib as its back-end. The
plotting module has functions to plot the following:
2D line plots
2D parametric plots.
2D implicit and region plots.
3D surface plots.
3D parametric surface plots.
3D parametric line plots.
Thanks to a GSoC project the beginning of a new module covering the theory of
differential geometry was started. It can be imported with sympy.diffgeom. It
is based on "Functional Differential Geometry" by Sussman and Wisdom. Currently
implemented are scalar, vector and form fields over manifolds as well as
covariant and other derivatives.
To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 pkgsrc/math/py-sympy/Makefile
cvs rdiff -u -r1.7 -r1.8 pkgsrc/math/py-sympy/PLIST
cvs rdiff -u -r1.6 -r1.7 pkgsrc/math/py-sympy/distinfo
cvs rdiff -u -r1.5 -r1.6 pkgsrc/math/py-sympy/patches/patch-aa
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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