For a lot of "special" or "famous" matrices listed here https://www.gnu.org/software/octave/doc/v4.0.1/Famous-Matrices.html https://www.gnu.org/software/octave

For a lot of "special" or "famous" matrices listed here https://www.gnu.org/software/octave/doc/v4.0.1/Famous-Matrices.html https://www.gnu.org/software/octave/doc/v4.0.1/Famous-Matric... it is not so easy to find whether a numpy equivalent exists, and in which module. Usually the first page of google results is not very helpful.