Table of Contents
Skew lattices
Abbreviation: SkLat
Definition
A \emph{skew lattice} is a structure $\mathbf{A}=\langle A,\vee,\wedge\rangle,$ of type $\langle 2,2\rangle$ such that
$\langle A,\vee\rangle$ is a band,
$\langle A,\wedge\rangle$ is a band,
and the following absorption laws hold: $x\wedge (x\vee y)=x=x\vee (x\wedge y)$, $(x\vee y)\wedge y=y=(x\wedge y)\vee y$.
Morphisms
Let $\mathbf{A}$ and $\mathbf{B}$ be skew lattices. A morphism from $\mathbf{A}$ to $\mathbf{B}$ is a function $h:A\rightarrow B$ that is a homomorphism: $h(x \vee y)=h(x) \vee h(y)$, $h(x \wedge y)=h(x) \wedge h(y)$,
Examples
Example 1:
Basic results
Properties
Feel free to add or delete properties from this list. The list below may contain properties that are not relevant to the class that is being described.
Finite members
$\begin{array}{lr}
f(1)= &1\\ f(2)= &3\\ f(3)= &7\\ f(4)= &\\ f(5)= &\\
\end{array}$ $\begin{array}{lr}
f(6)= &\\ f(7)= &\\ f(8)= &\\ f(9)= &\\ f(10)= &\\
\end{array}$
Subclasses
[[Lattices]] expanded type [[Rectangular_bands]] expanded type
Superclasses
[[Semigroups]] reduced type
References
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