Results 21 to 30 of about 1,612,373 (342)

Increasing positive monoids of ordered fields are FF-monoids [PDF]

open access: yesJournal of Algebra, 2016
Given an ambient ordered field K, a positive monoid is a countably generated additive submonoid of the nonnegative cone of K. In this paper, we first generalize several atomic features exhibited by Puiseux monoids of the field of rational numbers to the ...
F. Gotti
semanticscholar   +1 more source

ORDER ALGEBRAS

open access: yesDemonstratio Mathematica, 2002
The authors consider ordered sets with a greatest element. An algebra \({\mathcal P}= (P;\cdot,1)\) of type \((2,0)\) is called an order algebra if the following binary operation holds: If \(x\leq y\) then \(x\cdot y= 1\), and \(x\cdot y= y\) otherwise. Order algebras are connected with an implication modelling in intuitionistic logic.
Chajda, I., Halaš, R.
openaire   +2 more sources

Monoids with tests and the algebra of possibly non-halting programs [PDF]

open access: yes, 2015
We study the algebraic theory of computable functions, which can be viewed as arising from possibly non-halting computer programs or algorithms, acting on some state space, equipped with operations of composition, if-then-else and while-do defined in ...
Marcel Jackson   +3 more
core   +1 more source

MAXIMAL SUBSETS OF PAIRWISE SUMMABLE ELEMENTS IN GENERALIZED EFFECT ALGEBRAS

open access: yesActa Polytechnica, 2013
We show that in any generalized effect algebra (G;⊕, 0) a maximal pairwise summable subset is a sub-generalized effect algebra of (G;⊕, 0), called a summability block.
Zdenka Riečanová, Jiří Janda
doaj   +1 more source

Spectral spaces of countable Abelian lattice-ordered groups [PDF]

open access: yesTransactions of the American Mathematical Society, 2017
A compact topological space X is spectral if it is sober (i.e., every irreducible closed set is the closure of a unique singleton) and the compact open subsets of X form a basis of the topology of X, closed under finite intersections. Theorem.
F. Wehrung
semanticscholar   +1 more source

On Free $\omega$-Continuous and Regular Ordered Algebras [PDF]

open access: yesLogical Methods in Computer Science, 2019
We study varieties of certain ordered $\Sigma$-algebras with restricted completeness and continuity properties. We give a general characterization of their free algebras in terms of submonads of the monad of $\Sigma$-coterms.
Zoltan Esik, Dexter Kozen
doaj   +1 more source

Extended-order algebras

open access: yesJournal of Applied Logic, 2008
A weak extended-order algebra is a triplet \((A,\rightarrow ,1)\) of type \( (2,0)\) such that for all \(a,b,c\in A,\) the following conditions are satisfied: \(a\rightarrow 1=a\rightarrow a=1,\) if \(a\rightarrow b=b\rightarrow a=1\) then \(a=b\), and if \(a\rightarrow b=b\rightarrow c=1\) then \(a\rightarrow c=1.\) If \(a\rightarrow b=1\) then \((c ...
GUIDO, Cosimo, P. TOTO
openaire   +3 more sources

Linear Algebra and Smarandache Linear Algebra [PDF]

open access: yes, 2003
The present book, on Smarandache linear algebra, not only studies the Smarandache analogues of linear algebra and its applications, it also aims to bridge the need for new research topics pertaining to linear algebra, purely in the algebraic sense.
Vasantha, Kandasamy
core   +1 more source

Intuitionistic fuzzy lattice ordered G-modules [PDF]

open access: yesJournal of Fuzzy Extension and Applications
The investigation of mathematics underlines accuracy, precision, and flawlessness, yet in numerous genuine circumstances, individuals face equivocalness, ambiguity, imprecision, and so forth.
Poonam Sharma
doaj   +1 more source

Homological Algebra for Superalgebras of Differentiable Functions [PDF]

open access: yes, 2012
This is the second in a series of papers laying the foundations for a differential graded approach to derived differential geometry (and other geometries in characteristic zero). In this paper, we extend the classical notion of a dg-algebra to define, in
Sub Algebra,Geometry&Mathem. Logic begr.   +2 more
core   +1 more source

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