A uniform refinement property for congruence lattices
Wehrung, Friedrich
HAL, hal-00004063 / Harvested from HAL
The Congruence Lattice Problem asks whether every algebraic distributive lattice is isomorphic to the congruence lattice of a lattice. It was hoped that a positive solution would follow from E. T. Schmidt's construction or from the approach of P. Pudlak, M. Tischendorf, and J. Tuma. In a previous paper, we constructed a distributive algebraic lattice $A$ with $\aleph_2$ compact elements that cannot be obtained by Schmidt's construction. In this paper, we show that the same lattice $A$ cannot be obtained using the Pudlak, Tischendorf, Tuma approach. The basic idea is that every congruence lattice arising from either method satisfies the Uniform Refinement Property, which is not satisfied by our example. This yields, in turn, corresponding negative results about congruence lattices of sectionally complemented lattices and two-sided ideals of von Neumann regular rings.
Publié le : 1999-07-05
Classification:  von Neumann regular rings,  weakly distributive homomorphisms,  congruence splitting lattices,  Semilattices,  uniform refinement property,  Primary 06A12, 06B10; Secondary 16E50,  [MATH.MATH-GM]Mathematics [math]/General Mathematics [math.GM]
@article{hal-00004063,
     author = {Wehrung, Friedrich},
     title = {A uniform refinement property for congruence lattices},
     journal = {HAL},
     volume = {1999},
     number = {0},
     year = {1999},
     language = {en},
     url = {http://dml.mathdoc.fr/item/hal-00004063}
}
Wehrung, Friedrich. A uniform refinement property for congruence lattices. HAL, Tome 1999 (1999) no. 0, . http://gdmltest.u-ga.fr/item/hal-00004063/