/usr/share/maven-repo/org/apache/commons/commons-math3/debian/commons-math3-debian.jar is in libcommons-math3-java 3.6-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/org/apache/commons/commons-math3/debian/../../../../../../java/commons-math3.jar