Abstract
We define an ultra LI-ideal of a lattice implication algebra and give equivalent conditions for an LI-ideal to be ultra. We show that every subset of a lattice implication algebra which has the finite additive property can be extended to an ultra LI-ideal.
Similar content being viewed by others
References
Y. B. Jun, E. H. Roh and Y. Xu: LI-ideals in lattice implication algebras. Bull. Korean Math. Soc. 35 (1998), 13–24.
Y. B. Jun and Y. Xu: Fuzzy LI-ideals in lattice implication algebras. J. Fuzzy Math. 7 (1999), 997–1003.
Y. B. Jun, Y. Xu and K. Y. Qin: Positive implicative and associative filters of lattice implication algebras. Bull. Korean Math. Soc. 35(1) (1998), 53–61.
Y. Xu: Homomorphisms in lattice implication algebras. Proc. of 5th Many-Valued Logical Congress of China (1992), 206–211.
Y. Xu: Lattice implication algebras. J. Southwest Jiaotong University 1 (1993), 20–27.
Y. Xu and K. Y. Qin: On filters of lattice implication algebras. J. Fuzzy Math. 1 (1993), 251–260.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Qin, K., Xu, Y. & Jun, Y.B. Ultra LI-ideals in lattice implication algebras. Czechoslovak Mathematical Journal 52, 463–468 (2002). https://doi.org/10.1023/A:1021759209277
Issue Date:
DOI: https://doi.org/10.1023/A:1021759209277