Sage 3.1.2 Release Tour
Doctest Coverage Hits 60%
- Mike Hansen wrote doctests for almost all pexpect interfaces, which will ensure greater stability across the board.
Hidden Markov Models
Notebook Bugs
- Many bugs introduced in 3.1.1 were fixed by Mike Hansen and Timothy Clemans.
- A new testing procedure was implemented, hopefully preventing regressions like in 3.1.1 in the future.
New Structure for Partition Refinement
- Hypergraphs (i.e. incidence structures) -- this includes simplicial complexes and block designs
Improved Dense Linear Algebra over GF(2)
M4RI (http://m4ri.sagemath.org) was updated to the newest upstream release which
- provides much improved performance for multiplication,
- provides improved performance for elimination,
- contains several build and bugfixes.
- hashs and matrix pickling was much improved
dense matrices over \mathbb{F}_2 can now be written to/read from 1-bit PNG images
New PolyBoRi Version (0.5) and Improved Interface
PolyBoRi was upgraded from 0.3 to 0.5rc
mq.SR now returns PolyBoRi equation systems if asked to
- support for boolean polynomial interpolation was added
QEPCAD Interface
Developer's Handbook
- John H Palmieri rewrote/rearranged large parts of the 'Programming Guide' (now 'Developer's Guide') which should make getting started easier for new developers.
Improved 64-bit OSX Support
Fast Numerical Integration
GAP Meataxe Interface
In the module matrix_group, the method module_composition_factors interfaces with GAP's [http://www.gap-system.org/Manuals/doc/htm/ref/CHAP067.htm Meataxe] implementation. This will return decomposition information for a G-module, for any matrix group G over a finite field.
Better SymPy Integration
Faster Determinants of Matrices over Multivariate Polynomial Rings