It is proved that any variety of modular lattices containing the lattice M3,3 is almost universal. On the other hand any variety of lattices generated by the lattices Mn where n is a natural number is 3-determined.
It is proved that any variety of modular lattices containing the lattice M3,3 is almost universal. On the other hand any variety of lattices generated by the lattices Mn where n is a natural number is 3-determined. (en)