cardinal_decreases.con.body.xml cardinal_decreases.con.types.xml cardinal_Im_intro.con.body.xml cardinal_Im_intro.con.types.xml finite_image.con.body.xml finite_image.con.types.xml Im_add.con.body.xml Im_add.con.types.xml Image/ image_empty.con.body.xml image_empty.con.types.xml Im_def.con.body.xml Im_def.con.types.xml Im_ind.con.body.xml Im_ind.con.types.xml Im.ind.types.xml Im.ind.xml Im_inv.con.body.xml Im_inv.con.types.xml In_Image_elim.con.body.xml In_Image_elim.con.types.xml injective.con.body.xml injective.con.types.xml injective_preserves_cardinal.con.body.xml injective_preserves_cardinal.con.types.xml not_injective_elim.con.body.xml not_injective_elim.con.types.xml Pigeonhole.con.body.xml Pigeonhole.con.types.xml Pigeonhole_principle.con.body.xml Pigeonhole_principle.con.types.xml