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Topological and order-topological orthomodular lattices

Published online by Cambridge University Press:  17 April 2009

Zdenka Riecanová
Affiliation:
Department of Mathematics Electrotechnical Faculty of the Slovak, Technical University, Ilkovicova 3 CS-812 19, Bratislava, Czechoslovakia
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Abstract

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The necessary and sufficient conditions for atomic orthomodular lattices to have the MacNeille completion modular, or (o)-continuous or order topological, orthomodular lattices are proved. Moreover we show that if in an orthomodular lattice the (o)-convergence of filters is topological then the (o)-convergence of nets need not be topological. Finally we show that even in the case when the MacNeille completion of an orthomodular lattice L is order-topological, then in general the (o)-convergence of nets in does not imply their (o)-convergence in L. (This disproves, also for the orthomodular and order-topological case, one statement in G.Birkhoff's book.)

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1992

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