Vol. 57, No. 1, 1975

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Ideal lattices of lattices

Ralph S. Freese

Vol. 57 (1975), No. 1, 125–133
Abstract

This paper shows that any compactly generated lattice is a subdirect product of subdirectly irreducible lattices which are complete and upper continuous. An example of a compactly generated lattice which cannot be subdirectly decomposed into subdirectly irreducible compactly generated lattices is given. In the case of an ideal lattice of a lattice L, the decomposition into subdirectly irreducible complete lattices is tied, via a special completion process, to the finitely subdirectly irreducible homomorphic of images L. It is also shown that any finite lattice satisfying the Whitman condition is a retract of the ideal lattice of the dual ideal lattice of a free lattice.

Mathematical Subject Classification
Primary: 06A20
Milestones
Received: 9 August 1974
Published: 1 March 1975
Authors
Ralph S. Freese