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On the Schröder-Bernstein problem for Carathéodory vector lattices

Ján Jakubík (2009)

Czechoslovak Mathematical Journal

In this note we prove that there exists a Carathéodory vector lattice V such that V V 3 and V V 2 . This yields that V is a solution of the Schröder-Bernstein problem for Carathéodory vector lattices. We also show that no Carathéodory Banach lattice is a solution of the Schröder-Bernstein problem.

On the structure of continuous uninorms

Paweł Drygaś (2007)

Kybernetika

Uninorms were introduced by Yager and Rybalov [13] as a generalization of triangular norms and conorms. We ask about properties of increasing, associative, continuous binary operation U in the unit interval with the neutral element e [ 0 , 1 ] . If operation U is continuous, then e = 0 or e = 1 . So, we consider operations which are continuous in the open unit square. As a result every associative, increasing binary operation with the neutral element e ( 0 , 1 ) , which is continuous in the open unit square may be given in [ 0 , 1 ) 2 ...

On timed event graph stabilization by output feedback in dioid

B. Cottenceau, Mehdi Lhommeau, Laurent Hardouin, Jean-Louis Boimond (2003)

Kybernetika

This paper deals with output feedback synthesis for Timed Event Graphs (TEG) in dioid algebra. The feedback synthesis is done in order to (1) stabilize a TEG without decreasing its original production rate, (2) optimize the initial marking of the feedback, (3) delay as much as possible the tokens input.

On two classes of pseudo-BCI-algebras

Grzegorz Dymek (2011)

Discussiones Mathematicae - General Algebra and Applications

The class of p-semisimple pseudo-BCI-algebras and the class of branchwise commutative pseudo-BCI-algebras are studied. It is proved that they form varieties. Some congruence properties of these varieties are displayed.

On varieties of pseudo M V -algebras

Ján Jakubík (2003)

Czechoslovak Mathematical Journal

In this paper we investigate the relation between the lattice of varieties of pseudo M V -algebras and the lattice of varieties of lattice ordered groups.

Operators on G M V -algebras

Filip Švrček (2004)

Mathematica Bohemica

Closure G M V -algebras are introduced as a commutative generalization of closure M V -algebras, which were studied as a natural generalization of topological Boolean algebras.

Order bounded orthosymmetric bilinear operator

Elmiloud Chil (2011)

Czechoslovak Mathematical Journal

It is proved by an order theoretical and purely algebraic method that any order bounded orthosymmetric bilinear operator b : E × E F where E and F are Archimedean vector lattices is symmetric. This leads to a new and short proof of the commutativity of Archimedean almost f -algebras.

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