Table of Contents
Normal bands
Abbreviation: NBand
Definition
A normal band is a bands $\mathbf{B}=\langle B,\cdot \rangle $ such that
$\cdot $ is normal: $x\cdot y\cdot z\cdot x=x\cdot z\cdot y\cdot x$.
Morphisms
Let $\mathbf{B}$ and $\mathbf{C}$ be normal bands. A morphism from $\mathbf{B}$ to $\mathbf{C}$ is a function $h:B\rightarrow C$ that is a homomorphism:
$h(xy)=h(x)h(y)$
Examples
Basic results
Properties
Finite members
$\begin{array}{lr} f(1)= &1\\ f(2)= &\\ f(3)= &\\ f(4)= &\\ f(5)= &\\ f(6)= &\\ f(7)= &\\ \end{array}$
Subclasses
Superclasses
References
Trace: » normal_bands