/usr/include/OpenMS/MATH/ is in libopenms-dev 1.11.1-5.
This file is owned by root:root, with mode 0o755.
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/usr/include/OpenMS/MATH/MISC/
/usr/include/OpenMS/MATH/MISC/BilinearInterpolation.h
/usr/include/OpenMS/MATH/MISC/LinearInterpolation.h
/usr/include/OpenMS/MATH/MISC/MathFunctions.h
/usr/include/OpenMS/MATH/MISC/NNLS/
/usr/include/OpenMS/MATH/MISC/NNLS/NNLS.h
/usr/include/OpenMS/MATH/MISC/NNLS/README
/usr/include/OpenMS/MATH/MISC/NNLS/sources.cmake
/usr/include/OpenMS/MATH/MISC/NonNegativeLeastSquaresSolver.h
/usr/include/OpenMS/MATH/MISC/sources.cmake
/usr/include/OpenMS/MATH/STATISTICS/
/usr/include/OpenMS/MATH/STATISTICS/AsymmetricStatistics.h
/usr/include/OpenMS/MATH/STATISTICS/AveragePosition.h
/usr/include/OpenMS/MATH/STATISTICS/BasicStatistics.h
/usr/include/OpenMS/MATH/STATISTICS/GammaDistributionFitter.h
/usr/include/OpenMS/MATH/STATISTICS/GaussFitter.h
/usr/include/OpenMS/MATH/STATISTICS/GumbelDistributionFitter.h
/usr/include/OpenMS/MATH/STATISTICS/Histogram.h
/usr/include/OpenMS/MATH/STATISTICS/LinearRegression.h
/usr/include/OpenMS/MATH/STATISTICS/PosteriorErrorProbabilityModel.h
/usr/include/OpenMS/MATH/STATISTICS/ROCCurve.h
/usr/include/OpenMS/MATH/STATISTICS/StatisticFunctions.h
/usr/include/OpenMS/MATH/STATISTICS/sources.cmake