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Commits on Aug 20, 2012
  1. Fixed a short underline in the doc files.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 19, 2012
  2. Prepared the docs for the new functions.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 18, 2012
  3. Fixed lines longer than 80 characters.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 18, 2012
  4. Added tests/docstrings for the new functions in testutil.py

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 18, 2012
  5. More tests.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 17, 2012
  6. More tests, new file structure.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 16, 2012
    Added some more tests for the new functions and created a new file,
    sympy/combinatorics/testutil.py that will accomodate utility functions
    used specifically in testing functions from the combinatorics module
  7. Tests, new utility functions, triviality testing.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 14, 2012
    Started writing tests for the new functions (currently, there are
    tests for .center() and .centralizer().
    
    Wrote some new utility functions to help in the test process.
    
    Wrote a method to test whether a permutation group is trivial.
  8. Nilpotency testing, improved solvability testing.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 13, 2012
    And minor fixes in several docstrings.
  9. Debugging in subgroup_search.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 13, 2012
  10. Debugging in .centralizer(), docstrings.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 12, 2012
  11. Lower central series

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 11, 2012
  12. Commutator of two subgroups, derived series.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 11, 2012
  13. Restored alphabetical ordering in perm_groups.py

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 11, 2012
  14. Renamed .commutator() to .derived_subgroup()

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 11, 2012
    The commutator subgroup, also known as the derived subgroup,
    is the group generated by all the commutators of the group.
    
    The reason for the namechange is that the name commutator
    will be used for a more general procedure.
  15. Naive implementation of center, new file structure.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 11, 2012
    Implemented an algorithm for finding the center of a permutation
    group using .centralizer() in a straightforward way.
    
    Moved the DirectProduct() function to a new file,
    sympy/combinatorics/group_constructs.py
  16. A faster algorithm for normal closure.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 10, 2012
  17. Improved .centralizer(), started normal closure.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 9, 2012
  18. Pointwise stabilizer, group centralizer.

    Aleksandar Makelov
    Aleksandar Makelov committed Aug 6, 2012
Commits on Aug 18, 2012
  1. Merge pull request #1491 from smichr/partitions

    smichr committed Aug 18, 2012
    Partitions
  2. Merge pull request #1482 from gilbertgede/kane_interface

    smichr committed Aug 18, 2012
    Changed Kane class interface in physics.mechanics
Commits on Aug 17, 2012
  1. Revert "partitions: inherit from Union"

    smichr committed Aug 17, 2012
    This reverts commit 2223eb61bdf0ff3e014b57fa50c9f78c0b7803ee.
  2. partitions: inherit from Union

    smichr committed Aug 17, 2012
    The __len__ attribute is given to Partition since Union doesn't implement
    this.
    
    Since the Union prints with no canonical order, doctests were adjusted to
    avoid this.
  3. partitions: __sub__ calls __add__

    smichr committed Aug 17, 2012
    Also, don't allow addition of one partition to another -- require
    that an integer be used. If one wants to do this they can do
    a + b.rank to change a's rank by the value of b's.
  4. partitions: simplify code

    smichr committed Aug 17, 2012
  5. See Alsos added

    smichr committed Aug 16, 2012
  6. partitions: add args tests

    smichr committed Aug 16, 2012
  7. dups -> has_dups

    smichr committed Aug 16, 2012
  8. changes to partitions

    smichr committed Aug 16, 2012
Commits on Aug 16, 2012
  1. Merge pull request #1486 from rlamy/fix-1477

    smichr committed Aug 16, 2012
    Fix #1477