Hello folks,

this is likely to be indentical to 2.8.15 assuming nothing turns up
last minute. We closed 80 tickets this release cycle, see

http://www.sagetrac.org/sage_trac/query?status=closed&milestone=sage-2.8.15

Still no ATLAS and I had hoped that we would fix #1324 and #1325, but
that didn't happen. Better luck in the next release cycle. The tarball
is at

 http://sage.math.washington.edu/home/mabshoff/sage-2.9.15.rc1.tar

Size: 167 MB

William will do the final release which still requires a
documentation
rebuild.

Please report any issues, but better be quick ;)

Cheers,

Michael

ToDo:
 * investigate Justin's mwrank crashes on 10.5 - this might happen
   on teardown of the heap. Since mwrank as a stand alone binary
   will disappear shortly this problem might solve itself ;)

rc1 - merged:

#1074: Martin Albrecht: Singular segfault with monitor("","io");
-
       fixed upstream by Hans Schönemann.
#1271: Martin Albrecht: Update to Singular 3-0-4
#1383: trixb4kidz: fix segfault in modp code
#1384: Michael Abshoff, Carl Witty : fix numerical doctest on PPC OSX
       [again :)]
without ticket: bump scipy version to force rebuild on upgrade

rc0 - merged:

#1129: Craig Citro: fix is_irreducible() for certain polynomials
#1143: William Stein: improve nintegrate documentation in response to
       Paul Zimmerman's talk at Sage Days 6
#1160: William Stein: Fix some more fallout from the increased maxima
       doctesting
#1174: William Stein: fix very minor bug in calculs _complex_ coercion
#1181: Joel Mohler: polynomial/fraction field __hash__ re-write
#1231: Craig Citro: fix seg fault when computing with modular symbols
       over a finite field
#1287: Jen Balakrishnan: wrappers for Dokchitser L-series
#1309: Robert Miller: graphs: generate trees
#1356: Carl Witty: fix bug when taking abs() of exactly known QQbar
#1357: Carl Witty: the polynomial .roots() method should work with
       ring=QQbar
#1368: William Stein: algorithm for computing quotient was sometimes
       wrong
#1372: Michael Abshoff: dokchitser.py doctest failure (numerical
       noise)
#1973: William Stein, Carl Witty: improve doctests of
       quotient_module.py
#1374: Carl Witty, William Stein: segfault in coercion with matrices
       and ints
#1375: William Stein: tutorial texing typo issue
#1376: Carl Witty, Michael Abshoff: fix numerical doctest failures in
       2.8.15.rc0

alpha2 - Merged:

#787: William Stein: quotient spaces of vector spaces
#799: Leif Hille, William Stein: fix tachyon bug
#962: Mike Hansen: automatic precision extension for long decimal
      literals does very strange things
#1128: David Roe, Robert Bradshaw: Coercion of complex numbers
#1160: William Stein: *major* bug in using the sage notebook as a
       maxima notebook
#1179: Robert Miller: change all #!/bin/sh to #!/bin/bash in
       $SAGE_LOCAL/bin (Solaris related)
#1184: Michael Abshoff: OSX 10.4: moving sage breaks recompile -> NTL
       related
#1201: William Stein: add gramm-schmidt to sage
#1208: Jaap Spies: Faster _choose in matrix2.py
#1211: David Harvey: NTL crash in polynomial remainder over ZZ
#1222: Josh Kantor: cvxopt import trouble on PPC OSX 10.4
#1269: Carl Witty: make sage -t --omega work
#1275: Carl Witty: implementation of QQbar
#1290: Dan Drake, William Stein: add computation of Rencontres numbers
#1292: Carl Witty: fix bug in polynomial root finding mod n
#1298: Josh Kantor: build lapack on OSX for the ATLAS build
#1327: Josh Kantor: Solaris: scipy import error - fortran compiler
       related
#1342: William Stein: very serious bug in number field residue_field
#1349: to avoid massive confusion, make the default notebook location
       $HOME/.sage/notebook
#1353: Robert Miller: fix easy bug in graph_database.py
#1354: Michael Abshoff: Solaris modp 64 bit fix
#1355: Michael Abshoff: numerical noise doctest failures in
       rings/polynomial/[complex_roots.py|polynomial_element.pyx]
#1361: Robert Miller: reimplement graph generation
#1364: William Stein: sage/modules/quotient_module.py doctest failure

alpha1 - Merged:

#644: Mike Hansen: fix "(sin + cos)(1) does not work"
#1148: David Harvey, Robert Bradshaw: valuation doesn't work for
       rational numbers
#1214: Mike Hansen: error in polynomial ideal membership testing
#1249: Robert Miller: fixes bug in graph plotting with partitions
#1265: Paul Zimmermann: documentation typos
#1279: Martin Abrecht: LLL on "tall" matrices immediately crashes sage
#1280: Mike Hansen: make Permutation(range(10)).random() fast instead
       of dog slow.
#1333: William Stein: fix a major inefficiency in floating point
       square root computation in Sage
#1334: David Harvey: Constant polynomial can't be converted to
       rational
#1341: Josh Kantor: add script so that which_fortran returns g95 or
       gfortran
#1350: Mike Hansen: sage-2.8.15.alpha0 doctest error in plot.py
#1352: Mike Hansen: doctest error in 2.8.15.alpha0
       polynomial_element.pyx

alpha0 - Merged:

#645: Mike Hansen: multi-argument call for symbolic expressions
#847: Mike Hansen: rewrite the symbolic calculus package to do
      evaluation/simplification without recursion
#1107: William Stein: add minkowski bound function for number fields
#1111: Mike Hansen: Symbolic equation expand left and right
#1134: David Harvey: optimize creating elements of orders and number
       fields by coercing in lists [I left this ticket open fow now
       - see comment]
#1141: Joel Mohler: improve Number Field elements arithmetic speed
#1268: Carl Witty: new version of MPFI.spkg
#1270: Carl Witty: implement complex intervals
#1273: Carl Witty: implement complex root isolation
#1275: Carl Witty: implementation of QQbar
#1295: Jason Grout: Added code to create the butterfly graph
#1330: Michael Abshoff: Solaris: fix sympy doctest numerical noise
#1331: Michael Abshoff: Solaris: fix complex_double doctest numerical
       noise
#1335: Michael Abshoff: Linux PPC: lcalc doctest failure
#1336: Michael Abshoff: Linux PPC:
       rings/polynomial/polynomial_element.pyx doctest failure
#1345: Mike Hansen:  I is sometimes wrapped in SymbolicConstant,
       sometimes not


Reviewers: Carl Witty, William Stein, Mike Hansen, Robert Miller,
           Michael Abshoff, apologies to anybody I forgot.
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