Results 151 to 160 of about 881 (228)

Left strongly archimedean ordered semigroups

open access: yes, 2015
We prove that if an ordered semigroup is a nil extension of a left strongly simple ordered semigroup, then it is left strongly archimedean, but, in contrast to the unordered case, the converse does not hold in general.
Tsingelis, M., Kehayopulu, N.
core  

Semigroup structure in compactifications of ordered semigroups [PDF]

open access: yesCzechoslovak Mathematical Journal, 1977
Pym, J. S., Vasudeva, H. L.
openaire   +1 more source

Some Study of Semigroups of h-Bi-Ideals of Semirings.

open access: yesComput Math Methods Med, 2021
Anjum R   +5 more
europepmc   +1 more source

Bi-ideals in ordered semigroups and ordered groups

open access: yes, 2002
It is shown that an ordered semigroup is right and left simple if and only if it does not contain proper bi-ideals. An example showing that an ordered semigroup without proper bi-ideals need not be an ordered group is constructed. ©2002 Plenum Publishing
Ponizovskii, J.S.   +2 more
core  

FREE ORDERED SEMIGROUPS

open access: yes, 2020
. In this paper we introduce the concept of free ordered semigroups as follows: If (X, ≤X ) is an ordered set, an ordered semigroup (F, ., ≤F ) is said to be a free ordered semigroup over (X, ≤X ), if there is an isotone mapping ε : (X, ≤X ) → (F, ≤F ...
Online, Japonicae Scientiae Mathematicae
core  

On ordered $\Gamma$-semigroups ($\Gamma$-semigroups)

open access: yes, 2014
We add here some further characterizations to the characterizations of strongly regular ordered $\Gamma$-semigroups already considered in Hacettepe J. Math. 42 (2013), 559--567. Our results generalize the characterizations of strongly regular ordered semigroups given in the Theorem in Math. Japon.
openaire   +1 more source

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