Mathematical Structures: History of Lattice-ordered semigroups

[Home]History of Lattice-ordered semigroups

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Revision 2 . . July 30, 2004 12:35 pm by Jipsen
Revision 1 . . July 29, 2004 12:35 pm by Jipsen
  

Difference (from prior major revision) (no other diffs)

Changed: 28,29c28,29
\Large Name of class
\quad\href{http://math.chapman.edu/cgi-bin/structures?action=edit;id=Template}{edit}
\Large Lattice-ordered semigroups
\quad\href{http://math.chapman.edu/cgi-bin/structures?action=edit;id=Lattice-ordered_semigroups}{edit}

Changed: 31c31
\abbreviation{Abbr}
\abbreviation{LSgrp}

Changed: 34,35c34
A ... is a structure $\mathbf{A}=\langle A,...\rangle$ of type $\langle
...\rangle$ such that
A lattice-ordered semigroup (or $\ell$-semigroup) is a structure $\mathbf{A}=\langle A\vee,\wedge,\cdot\rangle$ of type $\langle 2,2,2\rangle$ such that

Changed: 37c36
$\langle A,...\rangle$ is a \href{Name_of_class.pdf}{name of class}
$\langle A,\vee,\wedge\rangle$ is a \href{Lattices.pdf}{lattice}

Changed: 39c38
$op_1$ is name of property: $axiom_1$
$\langle A,\cdot\rangle$ is a \href{Semigroups.pdf}{semigroups}

Changed: 41c40
$op_2$ is ...: $...$
$\cdot$ distributes over $\vee$: $x(y\vee z)=xy\vee xz$, $(x\vee y)z=xz\vee yz$

Changed: 50,51c49,52
Let $\mathbf{A}$ and $\mathbf{B}$ be ... . A morphism from $\mathbf{A}$ to $\mathbf{B}$ is a function $h:A\rightarrow B$ that is a homomorphism:
$h(x ... y)=h(x) ... h(y)$
Let $\mathbf{A}$ and $\mathbf{B}$ be lattice-ordered semigroups. A morphism from $\mathbf{A}$ to $\mathbf{B}$ is a function $h:A\rightarrow B$ that is a homomorphism:
$h(x \vee y)=h(x) \vee h(y)$,
$h(x \wedge y)=h(x) \wedge h(y)$,
$h(x \cdot y)=h(x) \cdot h(y)$,

Changed: 77c78
Classtype & (value, see description) \cite{Lastname19xx} \\\hline
Classtype & variety \\\hline

Changed: 83,84c84,85
Congruence distributive & \\\hline
Congruence modular & \\\hline
Congruence distributive & yes\\\hline
Congruence modular & yes\\\hline

Changed: 119,121c120
\href{....pdf}{...} subvariety

\href{....pdf}{...} expansion
\href{Lattice-ordered_monoids.pdf}{Lattice-ordered monoids} expanded type

Changed: 127c126
\href{....pdf}{...} supervariety
\href{Semigroups.pdf}{Semigroups} reduced type

Changed: 129c128
\href{....pdf}{...} subreduct
\href{Lattices.pdf}{Lattices} reduced type

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