/usr/share/java/uncommons-maths.jar is in libuncommons-maths-java 1.2.3-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/uncommons-maths-1.2.3.jar
/usr/share/java/uncommons-maths-1.2.3.jar