Abbreviation: CdMLat
A \emph{complemented modular lattice} is a complemented lattices $\mathbf{L}=\langle L,\vee ,0,\wedge ,1\rangle $ that is
modular lattices: $(( x\wedge z) \vee y) \wedge z=( x\wedge z) \vee ( y\wedge z) $
Let $\mathbf{L}$ and $\mathbf{M}$ be complemented modular lattices. A morphism from $\mathbf{L}$ to $\mathbf{M}$ is a function $h:L\to M$ that is a bounded lattice homomorphism:
$h(x\vee y)=h(x)\vee h(y)$, $h(x\wedge y)=h(x)\wedge h(y)$, $h(0)=0 $, $h(1)=1$
Example 1:
This class generates the same variety as the class of its finite members plus the non-desargean planes.
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 |
$\begin{array}{lr}
f(1)= &1
f(2)= &1
f(3)= &0
f(4)= &1
f(5)= &1
f(6)= &
f(7)= &
f(8)= &
\end{array}$