Proceedings of the University of Houston Lattice Theory ...
Siemion Fajtlowicz
.Houston 1973 MODULAR CENTERS OF ADDITIVE LATTICES Mary Katherine Bennett The modular center of a lattice L(wCL)) is defined to be {x|x e L andWl(a, x) for all a e L} where the symbol 7557„(a,x) means that a and x form a modular ...