Results 271 to 280 of about 391,233 (284)

Natural congruences and isomorphism theorems for directed complete partially ordered sets

Algebra universalis, 2017
It was shown by \textit{T. S. Blyth} and \textit{M. F. Janowitz} in [Residuation theory. Oxford etc.: Pergamon Press. (1972; Zbl 0301.06001)] that an equivalence \(R\) on an ordered set is a congruence, i.e. the quotient structure is an ordered set again, if and only if \(R\) is convex. Directed complete partially ordered sets play an important role in
Mahmoudi, Mojgan, Moghbeli, Halimeh, Pióro, Konrad   +2 more
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Natural Partial Orders on Division Rings with Involution

1993
This article studies intrinsic or natural partial orders on involutive division rings (D,*, II), where (a + b)* = a* + b*, (ab)* = b*a*, a** = a for a, b ∈ D, and where II is the strictly positive cone for an additive partial group order on (D, +). The involution defines several natural multiplicative subgroups G ⊂ D\ 0, and the positive cones are ...
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Classes of semigroups with compatible natural partial order. I.

Mathematica Pannonica, 2011
Summary: In this survey we find new semigroups and collect all semigroups known up to now that have a right (two-sided) compatible natural partial order. In this first part trivially, resp. totally, ordered semigroups are considered and semigroups in special classes -- in particular (E-)medial semigroups -- with this property are studied.
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NATURAL PARTIAL ORDERING ON E(Hyp_G(2))

Asian-European Journal of Mathematics, 2013
The concept of generalized hypersubstitutions was introduced by S. Leeratanavalee and K. Denecke as a way of making precise the concepts of strong hyperidentity and M-strong hyperidentity. The set Hyp G(2) of all generalized hypersubstitutions of type τ = (2) forms a monoid.
Wattapong Puninagool, Sorasak Leeratanavalee   +1 more
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The natural partial order on linear transformation semigroups with restrictions on nullity or co-rank

2023
The natural partial order ≤ on a semigroup S is a partial order de ned by a ≤ b if and only if a = xb = by and a = ay for some x; y ϵ S¹ where S¹ is the semigroup obtained from S such that S¹ = S if S has an identity and if S has no identity, let S1 be S with the identity 1 adjoined.
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Regularity and natural partial order on invariant transformation semigroups

Let T(X) be the full transformation semigroup on a nonempty set X. For any nonempty subset Y of X, we denote by TY(X)={α ∈ T(X) : Y α ⊆ Y} the invariant subsemigroup of T(X), consisting of all transformations on X that map Y into itself. In this thesis, we characterize the regularity of certain subsemigroups of TY(X). In addition, we provide necessary
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Reduced order modeling and large-scale validation for non-catalytic partial oxidation of natural gas

Chemical Engineering Science, 2022
Yury Voloshchuk, Andreas Richter
exaly  

The natural partial order

1998
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The natural partial order on semirings

1981
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Catalytic partial oxidation of natural gas at elevated pressure and low residence time

Catalysis Today, 2001
L Basini
exaly