Man pages matching name pdl::linearalgebra in section 3pm:

PDL::LinearAlgebra.3pm.en	debian 10 / libpdl-linearalgebra-perl
PDL::LinearAlgebra.3pm.en	debian 11 / libpdl-linearalgebra-perl
PDL::LinearAlgebra.3pm.en	debian 12 / libpdl-linearalgebra-perl