/usr/share/pyshared/cogent/maths/ is in python-cogent 1.5.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/cogent/maths/__init__.py
/usr/share/pyshared/cogent/maths/distance_transform.py
/usr/share/pyshared/cogent/maths/fit_function.py
/usr/share/pyshared/cogent/maths/function_optimisation.py
/usr/share/pyshared/cogent/maths/geometry.py
/usr/share/pyshared/cogent/maths/markov.py
/usr/share/pyshared/cogent/maths/matrix/
/usr/share/pyshared/cogent/maths/matrix/__init__.py
/usr/share/pyshared/cogent/maths/matrix/distance.py
/usr/share/pyshared/cogent/maths/matrix_exponentiation.py
/usr/share/pyshared/cogent/maths/matrix_logarithm.py
/usr/share/pyshared/cogent/maths/optimisers.py
/usr/share/pyshared/cogent/maths/period.py
/usr/share/pyshared/cogent/maths/scipy_optimisers.py
/usr/share/pyshared/cogent/maths/scipy_optimize.py
/usr/share/pyshared/cogent/maths/simannealingoptimiser.py
/usr/share/pyshared/cogent/maths/solve.py
/usr/share/pyshared/cogent/maths/spatial/
/usr/share/pyshared/cogent/maths/spatial/__init__.py
/usr/share/pyshared/cogent/maths/stats/
/usr/share/pyshared/cogent/maths/stats/__init__.py
/usr/share/pyshared/cogent/maths/stats/alpha_diversity.py
/usr/share/pyshared/cogent/maths/stats/cai/
/usr/share/pyshared/cogent/maths/stats/cai/__init__.py
/usr/share/pyshared/cogent/maths/stats/cai/adaptor.py
/usr/share/pyshared/cogent/maths/stats/cai/get_by_cai.py
/usr/share/pyshared/cogent/maths/stats/cai/util.py
/usr/share/pyshared/cogent/maths/stats/distribution.py
/usr/share/pyshared/cogent/maths/stats/histogram.py
/usr/share/pyshared/cogent/maths/stats/information_criteria.py
/usr/share/pyshared/cogent/maths/stats/jackknife.py
/usr/share/pyshared/cogent/maths/stats/kendall.py
/usr/share/pyshared/cogent/maths/stats/ks.py
/usr/share/pyshared/cogent/maths/stats/period.py
/usr/share/pyshared/cogent/maths/stats/rarefaction.py
/usr/share/pyshared/cogent/maths/stats/special.py
/usr/share/pyshared/cogent/maths/stats/test.py
/usr/share/pyshared/cogent/maths/stats/util.py
/usr/share/pyshared/cogent/maths/svd.py
/usr/share/pyshared/cogent/maths/unifrac/
/usr/share/pyshared/cogent/maths/unifrac/__init__.py
/usr/share/pyshared/cogent/maths/unifrac/fast_tree.py
/usr/share/pyshared/cogent/maths/unifrac/fast_unifrac.py