/usr/include/polybori/groebner/ is in libpolybori-dev 0.5~rc1-2.1build2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/polybori/groebner/cache_manager.h
/usr/include/polybori/groebner/dlex4data.h
/usr/include/polybori/groebner/dp_asc4data.h
/usr/include/polybori/groebner/groebner.h
/usr/include/polybori/groebner/groebner_alg.h
/usr/include/polybori/groebner/groebner_defs.h
/usr/include/polybori/groebner/interpolate.h
/usr/include/polybori/groebner/lexbuckets.h
/usr/include/polybori/groebner/literal_factorization.h
/usr/include/polybori/groebner/lp4data.h
/usr/include/polybori/groebner/nf.h
/usr/include/polybori/groebner/pairs.h
/usr/include/polybori/groebner/polynomial_properties.h
/usr/include/polybori/groebner/randomset.h