sage-2.10.3.txt

Hello folks,

Sage 2.10.3 has been released on March 11th, 2008. It is available at

           http://sagemath.org/download.html

* About Sage (http://www.sagemath.org)

Sage is developed by volunteers and combines 71 open source packages.
It is available for download from sagemath.org and its mirrors in
source or binary form. If you have any questions and/or problems
please report them to the google groups sage-devel, sage-support,
You can also drop by in #sage-devel or #sage-support infreenode.

We have closed the Google Groups sage-newbie and sage-forum so 
that we can deal with support questions in sage-support only. We 
decided to close those two groups since we had various inquiries 
left unanswered due to people posting to the wrong group.

---------------------------------------------------------------------

The following 29 people contributed code to this release:

 * Michael Abshoff
 * Antti Ajanki
 * Martin Albrecht
 * Nick Alexander
 * Jonathan Bober
 * Tom Boothby
 * Robert Bradshaw
 * Craig Citro
 * Timothy Clemans
 * John Cremona
 * Didier Deshommes
 * Burcin Erocal
 * Gary Furnish
 * Alex Gitza
 * Jason Grout
 * Mike Hansen
 * David Harvey
 * David Joyner
 * Simon King
 * Emily Kirkman
 * Robert Miller
 * Bobby Moretti
 * Clement Pernet
 * Jaap Spies
 * William Stein
 * Chris Swierczewski
 * John Voight
 * Carl Witty
 * Paul Zimmermann

Cheers,

Michael Abshoff (release chair), William Stein

* Major Features, New Spkgs and Bugfixes

 * Interactive Functions: Sage now has a first version of 
   its "interact" command. Calling "@interact" before 
   defining a function will construct controls to 
   graphically control the input variables of the function, 
   making it dramatically easier to create interactive 
   functionality that is easy to use. See 
   http://wiki.sagemath.org/interact for details and 
   examples or just type "interact?" in Sage.

 * Graph theory: Many of the results of Sage Days 7: 
   Combinatorics are included in this release, including 
   Schnyder's algorithm for producing straight-line drawings 
   of planar graphs in linear time (Jonathan Bober and Emily 
   Kirkman), and a new compiled backend for the base graph 
   structures (Robert Miller). This backend will be switched 
   into graphs proper in sage-2.10.4, and the basic functions, 
   such as add edge and has edge, will be sped up by at least 
   20 times in many cases, and often much more. In addition 
   most of graph.py was refactored and cleaned up, in 
   preparation for the switch.

 * Plotting: The plot_vector_field function now takes 
   2-variable functions, allowing for much more complex 
   vector fields.

 * Linear Algebra: Matrices now have a jordan_form method 
   which computes the Jordan canonical form.

 * Unified derivative syntax: The derivative function now 
   accepts the same argument format across many different 
   data types, including symbolic objects, polynomials, 
   power series, and Laurent series.

 * LinBox & Givaro updates: Clement Pernet did fix a large 
   number of issues in LinBox and Givaro in cooperation with 
   Michael Abshoff and we finally updated the code in Sage 
   to clean upstream code. While there are still issues left 
   we will do more work in that direction in 2.10.4 and 2.11.

* Known Issues with 2.10.3:

 * None

* Bug Statistics

We closed 152 tickets. For details see

   http://trac.sagemath.org/sage_trac/milestone/sage-2.10.3

or check out the closed ticket section at the end of the 
announcement. 

* Upcoming Releases

The next release will be 2.10.4, chaired by Robert Miller and 
Michael Abshoff. The release is planned in about two weeks. 
Potential features (which is also the goal for 3.0) include:

 * 47% doctest coverage
 * OSX 10.5 support in 64 bit mode [this will depend on fixing
   a vexing segfault in libSingular and getting disutils to
   play nice with numpy]
 * Pexpect interface to R

* Doctesting Coverage

For 2.10.2 we had:
Overall weighted coverage score:  40.1%
Total number of functions:  18528

We increased coverage by 4.4% in 2.10.3 while adding 112 functions:

Overall weighted coverage score:  44.5%
Total number of functions:  18640

* Closed Tickets:

Merged in final:

#2435: Robert Bradshaw, Michael Abshoff: Fix memory leak 
       from #1337 workaround
#2453: William Stein: disable linbox minpoly and charpoly 
       mod p, since they are completely broken.  Disabling 
       them removes "space.py segfaults".
#2471: William Stein: doctest failures in graph.py and 
       factorization.py (caused by architecture dependence))

Merged in rc5: 

#2371: William Stein: tut.tex failures for 2.10.3.rc0
#2449: William Stein: interactive functionality for the notebook
#2463: Clement Pernet: Linbox static commentator make sage crash 
       on PPC
#2464: William Stein: slight change to coverage script to avoid 
       functions named "_"
#2465: William Stein: fix bug with phi(I) for I an ideal exposed
       by groebner_fan.
#2466: William Stein: 2.10.3: doctest failure in const.tex

Merged in rc4: 

#2340: Chris Swierczewski, John Cremona: Docstrings and doctests 
       for rings/ring.pyx
#2374: Gary Furnish: sage-ptest must run in $SAGE_ROOT
#2425: Jason Bandlow: In multipolynomials, the function jacob() 
       should be called gradient()
#2433: Robert Miller: Refactor graph code; prepare for backend 
       migration; miscellaneous small things from Waterloo
#2438: Martin Albrecht: get the reference manual to build again
#2439: Carl Witty: ZZ.random_element() crashes Sage with 
       probability 2^-31
#2440: Chris Swierczewski: Doctests for rings/quotient_ring.py
#2441: Robert Miller: fix typo in chromatic number
#2442: Timothy Clemans: Clone Mathematica's Differences function
#2443: Martin Albrecht: add LaTeX macros like \Singular
#2445: John Cremona: algebras module lacks many docstrings and tests
#2451: William Stein: plotting - contour_plot and plot_vector_field 
       are REALLY SLOW but it's easy to get a million times speedup
#2456: Gary Furnish: fix matrix_symbolic_dense doctest failures
#2457: Gary Furnish: fix ideal.py doctest failure
#2458: Michael Abshoff: bug in linbox's spkg-install: ${SAGE_LCOAL}

Merged in rc3:

#1337: Michael Abshoff, Gary Furnish, Robert Bradshaw: tp_new 
       leads to munmap_chunk(): invalid pointer segfault
#1711: Burcin Erocal: SIGSEGV in PolyBoRi's BooleSet iterator
#1884: Robert Bradshaw: memory leak in real numbers
#2305: Chris Swierczewski: Docstrings and doctests for 
       rings/ideal.py
#2142: Robert Bradshaw: product of two subdivided matrices 
       should yield a subdivided matrix if it makes sense
#2334: Michael Abshoff: $SAGE_LOCAL/include/eclib has wrong 
       permissions
#2398: William Stein: new Hermite normal form code returns 
       a zero row at the top of a matrix.
#2399: Jason Grout: allow utf8 characters in the notebook 
       cells
#2423: Jason Grout: notebook() opens up to the entire world 
       by defaultl
#2434: Robert Miller: fix doctest in plot.py

Merged in rc2:

#277: John Cremona: Add generic_discrete_logarithm and order 
      computation using Pollard's rho algorithm
#2155: William Stein: greatly speed up matrix inversion for 
       1x1 and 2x2 matrices over QQ by a factor of 20!; 
       speed up changing base rings (architecture); hadamard 
       bound
#2207: Mike Hansen: fcp for matrices over SR
#2310: William Stein: bug attaching files in files that 
       are attached
#2356: John Cremona: Bug in discrete_log_generic
#2370: Didier Deshommes: unable to coerce bool types to 
       Sage integers
#2381: Jason Grout: plot_vector_field: implement ability to 
       plot arbitrary vector fields
#2382: Gary Furnish: sage-doctest broken by removal of temp 
       files
#2388: Clement Pernet: linbox charpoly crashes on OSX 10.5 
       Intel - this is a work around fix
#2391: William Stein: module docstring bug running 
       filename.sage from the command line
#2392: Nick Alexander: generic univariate polynomial has 
       no discriminant function
#2395: Simon King: New features for number fields (gap 
       interface, matrix groups)

Merged in rc1:

#590: Mike Hansen: document extended_rational_field.py
#753: David Harvey, Carl Witty: derivative alias for diff
#915: Clement Pernet: Make LinBox interface use PID_Integer 
      instead of using old header as workaround
#1748: Carl Witty: Passing the ipython argument '-wthread' at 
       startup
#1805: William Stein: improve doctest coverage for 
       Factorization; fix several critical bugs
#1810: Martin Albrecht: refactoring to improve finite field 
       reference manual
#1868: Jaap Spies: New experimental mayavi2 package
#1902: John Cremona: mistake in the documentation for gens 
       for Finite field givaro
#2099: Nick Alexander, Gary Furnish: Make sage-test execute 
       multiple doctests in parallel
#2239: John Voight, William Stein: Leak in totallyreal.py
#2245: William Stein, Craig Cigtro: abvar -- increase the 
       doctest coverage to 100%
#2254: Clement Pernet:Upgrade linbox and givaro spkg to 
       upstream
#2268: Gary Furnish, Robert Bradshaw: has_coerce_map_from_c 
       performance improvements
#2275: Mike Hansen: get sloane_functions.py to 100% coverage
#2279: Craig Citro: Followup fix due to a typo in a doctestfix
#2298: Carl Witty: implement a way to compute a number field 
       containing given algebraic numbers
#2326: Robert Miller: compiled sparse and dense graph 
       datastructures
#2333: Mike Hansen: hg_sage.apply('http://foo.org/.../bar.patch') 
       should be made to work
#2343: Martin Albrecht: for zero-dimensional ideals, allow
       computation of varieties over arbitrary fields
#2345: Mike Hansen: negative indicies in vectors
#2349: Martin Albrecht: homogenize does different things 
       in different contexts
#2350: Jason Grout: revert show(list) to the The 2.10.2 behavior
#2363: Gary Furnish: Integer.pyx mpz structure fix
#2365: Carl Witty: with sage -wthread, attach runs code in wrong 
       thread on subsequent loads
#2375: Robert Miller: Sage 2.10.3.rc1: graph_isom.py doctest
       failure in PermutationGroup
#2376: Michael Abshoff: Sage 2.10.3.rc1: various doctest failure 
       in abvar
#2377: Simon King: Bugfix for the new __copy__ method of 
       SingularElement

Merged in rc0:

#37: William Stein: preparser doesn't parse hex input
#874: Jason Grout: Implement Jordan and Rational Canonical Form
#1151: Martin Albrecht: Bug in creating elements in 
       multivariate quotient rings that cannot be coerced 
       to singular
#1186: Alex Gitza, Mike Hansen: Charpoly of a matrix of 
       polynomials sometimes breaks
#1209: Mike Hansen: make it so maple.gcd?? shows source code
#1320: Emily Kirkman: graph planarity testing
#1639: John Cremona: missing documentation P.completion()
#1722: Mike Hansen: Symbolic Matrices should be callable
#2037: David Joyner, Alex Ghitza: out-of-date tutorial 
       section on errors and exceptions
#2050: Nick Alexander: disallow *generic* matrix eigenspaces 
       for inexact fields
#2058: Martin Albrecht, Burcin Erocal: PolyBoRi evaluation
#2105: Martin Albrecht: Constructor for ntl.GF2X polynomials 
       does not take Polynomials over GF(2)
#2279: John Voight: numerical noise? doctest failure in 
       sage.rings.number_field.totallyreal.__selberg_zograf_bound 
       with 2.10.2
#2281: John Cremona: elliptic_curve_finite_field: order caching
       problem
#2283: Jason Grout, Gary Furnish: the coercion code (in __mul__) 
       should call __rmul__ when left or right is not coercible 
       to a Sage element
#2284: Bobby Moretti: CallableSymbolicExpression._latex_() 
       has some odd behavior
#2286: Carl Witty: create and document a new "fp_rank" concept
#2289: Alex Ghitza: make the constructions document 
       prettier and more consistent
#2292: David Joyner: segfault in AbelianGroups
#2293: David Joyner: word_problem error in AbelianGroup
#2299: Nick Alexander: add zero_matrix constructor
#2300: Simon King: A copy method for SingularElement
#2301: Simon King: Bug in sage_structured_str_list
#2315: Jason Grout: Union of Graphs
#2323: Yi Qiang: updated tutorial to include dsage section
#2324: Carl Witty: RealNumber->QQ coercion fails for NaN, 
       infinity
#2327: Michael Abshoff: libgcrypt can't find libgpg-error 
       headers
#2336: William Stein: hermite -- this function in sage is broken 
       in more ways than it has lines of code
#2337: William Stein: fix typo in save_session
#2338: Martin Albrecht: add p.lexLmDeg to PolyBoRi polynomials
#2342: Robert Miller: digraphs show axes...

Merged in alpha0:

#1311: Tom Boothby: graphs: calculate chromatic number
#1313: Tom Boothby: graphs: calculate chromatic polynomial
#1382: Timothy Clemans, William Stein: conversion of sage 
       matrices to mathematica is completely totally broken
#1399: John Cremona, William Stein: improve and document 
       integer is_prime and is_irreducible
#1962: Robert Miller: set_edge_label creates edges when 
       multiple edges are allowed
#2087: Michael Abshoff: make the final output of "sage -i" 
       more user friendly
#2135: Robert Miller: allow for specifying initial position 
       in spring layout
#2154: Robert Miller: Infinite memory allocation bug in 
       PermutationGroupElement
#2180: William Stein: cython skipping (build optimization)
#2206: Jason Grout, Alex Ghitza: some fixes of Factorizations
#2240: Chris Swierczewski, Mike Hansen: Docstrings and 
       Doctests: calculus.py
#2265: Jason Grout: fix shortest_path_all_pairs
#2271: Antti Ajanki, Tom Boothby: Include Antti Ajanki's 
       DLX library
#2274: David Joyner: guava->python (Part 1)
#2282: Craig Citro: readline currently not building dynamic 
       library on Mac
#2285: Michael Abshoff: add "--trace-children=yes" back for 
       memcheck in sage-doctest
#2288: David Joyner: tutorial -- fix some typos
#2290: Paul Zimmermann, David Joyner: typo in calculus.py
#2294: Carl Witty: RealDoubleElement _interface_init_ is 
       very poor
#2295: Burcin Erocal: build cache check fails on paths 
       containing symlinks
#2297: Simon King: Tensor product of matrices
#2307: Robert Miller: has_edge ignores labels
#2308: Michael Abshoff: remove SAGE_ROOT/local/bin/sage-server 
#2309: Carl Witty: The patch from #2267 introduced spurious 
       linebreak commands '\\'
#2311: William Stein: remove stupid timeout from sage-location