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Complemented modular lattices
Abbreviation: CdMLat
Definition
A \emph{complemented modular lattice} is a complemented lattices L=⟨L,∨,0,∧,1⟩ that is
modular lattices: ((x∧z)∨y)∧z=(x∧z)∨(y∧z)
Morphisms
Let L and M be complemented modular lattices. A morphism from L to M is a function h:L→M that is a bounded lattice homomorphism:
h(x∨y)=h(x)∨h(y), h(x∧y)=h(x)∧h(y), h(0)=0, h(1)=1
Examples
Example 1:
Basic results
This class generates the same variety as the class of its finite members plus the non-desargean planes.
Properties
Classtype | first-order |
---|---|
Equational theory | decidable |
Quasiequational theory | undecidable |
First-order theory | undecidable |
Locally finite | no |
Residual size | unbounded |
Congruence distributive | yes |
Congruence modular | yes |
Congruence n-permutable | yes |
Congruence regular | no |
Congruence uniform | no |
Congruence extension property | |
Definable principal congruences | |
Equationally def. pr. cong. | |
Amalgamation property | |
Strong amalgamation property | |
Epimorphisms are surjective |
Finite members
f(1)=1f(2)=1f(3)=0f(4)=1f(5)=1f(6)=f(7)=f(8)=