Burcin's status report for SD 12

pynac

• print higher degree terms first
• added:
  • support for symbolic binomial and factorial

  • .latex() method

  • .collect_common_factors()

  • iterators and __getitem__

  • .function() method to allow creating CallableSymbolicExpressions with pynac expressions

Changes above will be in the pynac-0.1.2 release, which should be released with Sage 3.3.

I have patches that

• add constants for Infinity and UnsignedInfinity (to pynac)

• implement arithmetic with infinity
• make 1/gamma(-1) = 0
• fix series expansion of 1/(1/sqrt(x) + 1/x)

which need to be cleaned up and tested more. They should be available for testing before I get home (next Tuesday).

bugs fixed

• #4981 clean up polynomial_ring.py
• #4840 FLINT: call the stack cleanup function at exit

• #3298 Cython warnings for PolyBoRi

reviews

• #4850 bug in power_mod
• #5027 comparing complex i raises error
• #2957 Singular multivariate polynomials are buggy on exponent overflow)