/usr/ is in mediawiki-extensions-math 2:1.0+git20120528-8.
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/usr/share/
/usr/share/mediawiki-extensions/
/usr/share/mediawiki-extensions/math/
/usr/share/mediawiki-extensions/math/Math.php
/usr/share/mediawiki-extensions/math/db/
/usr/share/mediawiki-extensions/math/db/math.sql
/usr/share/mediawiki-extensions/math/db/math.oracle.sql
/usr/share/mediawiki-extensions/math/db/math.pg.sql
/usr/share/mediawiki-extensions/math/db/math.mssql.sql
/usr/share/mediawiki-extensions/math/db/math.db2.sql
/usr/share/mediawiki-extensions/math/Math.hooks.php
/usr/share/mediawiki-extensions/math/mathParserTests.txt
/usr/share/mediawiki-extensions/math/Math.body.php
/usr/share/mediawiki-extensions/math/Math.i18n.php
/usr/share/doc/
/usr/share/doc/mediawiki-extensions-math/
/usr/share/doc/mediawiki-extensions-math/README.Debian
/usr/share/doc/mediawiki-extensions-math/copyright
/usr/share/doc/mediawiki-extensions-math/mathParserTests.txt.gz
/usr/share/doc/mediawiki-extensions-math/changelog.Debian.gz