The UNICODEMATH package
This package will provide a complete implementation of unicode maths for XeLaTeX and LuaLaTeX.
While I am a little wary of encouraging people to use this package for production work, I understand that it has certain uses and am making it available for distribution. Your testing and feedback is essential to fill in the many gaps that I miss!
Please be aware that this package is undergoing continued development and the interface and functionality should not be considered completely stable. But the more the package is used the more stable it will become. (Things are generally working now; it is only minutiae that may change in the future.)
Unicode maths is currently supported by the following fonts:
 Cambria Math (Microsoft),
 Minion Math (Johannes Küster, typoma GmbH)
 Latin Modern Math (Bogusław Jackowski, Janusz M. Nowacki)
 TeX Gyre Pagella Math (Bogusław Jackowski, Janusz M. Nowacki)
 Asana Math (Apostolos Syropolous),
 Neo Euler (Khaled Hosny),
 STIX (STI Pub), and
 XITS Math (Khaled Hosny).
With the exception of Cambria Math, which is proprietry, the fonts above are all freely available and released under open source licences (the GUST Font License and Open Font Licence).
I'm always looking for new fonts to test with, so please let me know of any new releases.
PACKAGE USAGE
Please see the PDF documentation for full details. A simple beginning is:
\usepackage{unicodemath}
\setmathfont{xitsmath.otf}
Most LaTeX math should still work after this. (Let me know if it doesn't.) Furthermore, it will be in a different font.
REQUIREMENTS
As well as running XeTeX or LuaTeX, this package requires recent versions of the fontspec
, expl3
, xpackages
, filehook
, ucharcat
, and lualatexmath
packages.
MAINTENANCE
The current release version is available from CTAN:
Latest developmental and archived historical versions are available from Github:
Please file bug reports with minimal examples:
CHANGE HISTORY

v0.8c (2015/09/24)
 Add
\over(left/right)harpoon
as "wide" accents.  Add RTL mathematics operators
\arabicmaj
and\arabichad
, which correspond toU+1EEF0
andU+1EEF1
, resp.  Remove
catchfile
package dependency.  Update some internal names to match expl3 standards.
 Add

v0.8b (2015/09/09)
 Bug fix: Use the "ucharcat" package to simplify some code that caused some headaches with \tl_rescan:nn.

v0.8a (2015/08/06)
Fix bug with \vert, , (l/r)vert, etc., displaying with the wrong characters.
Improve documentation to properly reflect changes in v0.8 and fix some broken examples.
No longer reset catcodes of : and @ during \setmathfont .

Fix remapping of alphabets (needed for Minion Math) in cases such as:
\setmathfont[range=bfit>it]{MinionMathBold.otf}

v0.8 (2015/07/29) Breaking changes in this update!
\mathrm
(\mathup
),\mathit
,\mathbf
,\mathsf
, and\mathtt
revert to their traditional LaTeX meanings; they are set up to match their equivalent text fonts unless specifically set using\setmathrm
and friends fromfontspec
or the new\setmathfontface
inunicodemath
. These commands should be used for multiletter identifiers.New "symbol" commands have been added,
\symrm
(\symup
),symit
, ..., to replace the behaviour of the old commands. These should be used for singleletter identifiers. See the package documentation for more detail on these and related commands.Package options
mathit=sym
,mathbf=sym
, etc., reverse the changes above to revert to prev0.8 behaviour for\mathXYZ
. Regardless of package option,\symXYZ
always maps to symbols and\mathtextXYZ
is provided for the traditional\mathXYZ
font switch.New command
\setoperatorfont
to set the font used for commands such as\sin
and\cos
. Usage:\setoperatorfont\mathbf
or any command defined with\setmathfontface
.Traditional LaTeX
\DeclareMathAlphabet
now works again for legacy fontloading packages.Commands defined to "force" Greek letters with
\upbeta
and\itbeta
, etc.Assorted bug fixes and minor changes.

v0.7e (2014/06/30)
 No longer assume fixltx2e has been loaded.
 Some ascii math symbols have been renamed with a \math... prefix, such as \mathquestion.
 Assume latest luaotfload is being used; no need for a separate unicodemath.lua script.
 Assorted typos and minor bugs.

v0.7e (2013/05/04)
 Track luaotfload updates.

v0.7d (2013/03/16)
 More expl3 changes missed first time around. (Sorry again.)

v0.7c (2013/02/25)
 The Latin Modern math font name changed TWICE. Only caught the first one. Sorry for any inconvenience caused.

v0.7b (2013/02/22)
 Keep in sync with Latin Modern Math font name change.
 Keep in sync with expl3 changes.

v0.7a (2012/07/28)
 Keep in sync with expl3 changes.

v0.7 (2012/05/30): The TeX Live 2012 release.
 Most changes (and all significant ones) in this release thanks to Khaled Hosny, who is now credited as an author of the package.
 Many improvements for XeTeX support to take advantage of the new engine
(v0.9998) in TL2012.
 As a result,
\resetmathfont
is no longer required.
 As a result,
 Improve
\not
to use precombined glyphs where possible.  LM Math is loaded by default.
 Support bottom accents.
 And add
\wideutilde
.
 And add
 The ‘symbols’ document is somewhat better organised and contains information on whether a symbol is defined in plain TeX or amssymb.
 Various other minor fixes and additions:

\underleftrightarrow
added for fonts that support it.  Don’t overwrite mathtool’s
\overbracket
and\underbracket
.  Bug in
[range=...]
parsing fixed.  Add
\longdivision
.  Add
\lgroup
and\rgroup
.  Fix ‘moustache’ delimiters.

\openbox
renamed to\mathvisiblespace
, since it is already defined in amsthm as an empty box.


v0.6a (2011/09/19)
 Always a bug that slips through the cracks! Fixes
\left.
and\right.
 Add experimental package option
warningsoff=...
which allows warnings to be suppressed on an individual basis.
 Always a bug that slips through the cracks! Fixes

v0.6 (2011/09/18)
 Keep in sync with fontspec internals (sorry for the small delay where things were broken)
 Keep in sync with expl3 deprecated functions
 Math versions (finally) implemented; can now change maths fonts middocument without reinitialising everything (thanks to Ulrike Fischer and Ulrik Vieth)
 Symbols file
unimathsymbols.pdf
now uses maths versions to compare all of the OpenType maths fonts I currently have access to  Over and under braces, brackets, and parentheses now work in XeTeX (thanks to Claudio Beccari)
 Many internal changes, including a rewrite of the
range
feature; it should now be faster and more robust  Tentative programmer's interface for querying the current math style:
\l_um_mathstyle_tl
.  Remove (outdated) interaction with beamer; you must specify
professionalfonts
manually for now  Quieten the console output when loading maths fonts with incomplete maths style coverage
 Synonym added:
\lnot
>\neg
 Two added Unicode symbols (names tentative):
\blanksymbol
and\openbox
(thanks to Apostolos Syropoulos)  Fixed literal sub/superscript input.

v0.5e (2011/07/31)
 Fix forward compatibility clash with deprecated expl3 functions (sorry)
 Command names are now
\protected
; this makes them safe to use in moving arguments and so on  Similarly to the change in v0.5c, the main math font is now loaded in
math family zero (equiv. to LaTeX's
operators
math font) 
\mathring
added  Ensure that a math font has been selected in order to prevent problems in minimal documents (this will be unnecessary when the OpenType LM math font is released)
 Documentation for which was which of epsilon/varepsilon was backwards! (thank to Rasmus Villemoes for pointing this out)
 Spurious
\upUpsilon
removed (the one at U+03A5 is now the correct one)  Typo when defining
\dprime
fixed (thanks to Ulrik Vieth for these last two)  Fix the math class of
\modtwosum
; it is now a large operator (thanks to Michael Ummels)  Move several LuaTeXrelated patches to the
lualatexmath
package  Fixed mathtool's
\cramped
in XeLaTeX usage

v0.5d (2011/01/30)
 Assorted improvements to LuaLaTeX support, including nongrowing accents available in LuaTeX v0.65 and later
 Improved behaviour with reading and using maths font dimensions
 Better compatibility with legacy maths packages and environments (always more worked needed, though)
 Fix the default setting for "vargreekshape"

v0.5c (2010/09/27)
 Fix a longstanding bug in XeLaTeX in which the "master" math families 2 and 3 weren't being set; hence fraction rules and many other parameters were not being set correctly
 Stay in sync with internal fontspec changes

v0.5b (2010/09/19): Tuneup
 Added missing symbols/synonyms: \diamond \smallint \emptyset \hbar \backepsilon \eth
 \overline works for LuaLaTeX
 Fix \slash; previously, it overwrote the text definition
 \vartriangle now has the correct math class

v0.5a (2010/07/14): TeX Live 2010 release
 Numerous documentation improvements
 Bug fix against stray catcode changes
 Add
\mathcal
and\mathbfcal
as distinct from the Script style; these are only supported by the XITS fonts at present  Small changes to the range of symbols offered (especially note that
\ac
is now\invlazys
to avoid acronym package clash)  Superscripts are allowed after primes (as they should be)
 Numerous LuaLaTeX improvements, including roots and over/under braces.
v0.5 (2010/06/03): Initial CTAN release
LICENCE
The unicodemath package may be modified and distributed under the terms and conditions of the LaTeX Project Public License, version 1.3c or greater.
This work is authormaintained and consists of the files
 unicodemath.dtx,
 unicodemathtable.tex,
 unimathexample.ltx,
 unimathsymbols.ltx,
 unicodemathtestsuite.ltx;
the derived files
 unicodemath.lua,
 unicodemath.sty;
the compiled documentation files
 unicodemath.pdf,
 unicodemathtestsuite.pdf,
 unimathexample.pdf,
 unimathsymbols.pdf;
and the test suite for this package
 testfiles/umtestpreamble.tex,
 testfiles/umtestsuite(FLX).tex,
 testfiles/*.ltx.
Copyright 20062012 Will Robertson will.robertson@latexproject.org Copyright 20102011 Philipp Stephani st_philipp@yahoo.de Copyright 2012 Khaled Hosny khaledhosny@eglug.org