Results 11 to 20 of about 114 (32)

New Representations of Matroids and Generalizations [PDF]

, 2011
We extend the notion of matroid representations by matrices over fields and consider new representations of matroids by matrices over finite semirings, more precisely over the boolean and the superboolean semirings.
Izhakian, Zur, Rhodes, John
core   +3 more sources

Congruences and ideals on Boolean modules: a heterogeneous point of view [PDF]

, 2010
Definitions for heterogeneous congruences and heterogeneous ideals on a Boolean module M are given and the respective lattices CongM and IdeM are presented.
Oliveira-Martins, M. Teresa, Pinto, Sandra Marques   +1 more
core   +1 more source

Dualities for modal algebras from the point of view of triples [PDF]

, 2015
In this paper we show how the theory of monads can be used to deduce in a uniform manner several duality theorems involving categories of relations on one side and categories of algebras with homomorphisms preserving only some operations on the other ...
A. Petrovich, A. Stralka, B. Jónsson, B. Jónsson, C. Kupke, D. Hofmann, D. Pumplün, D. Pumplün, Dirk Hofmann, F.B. Wright, G. Sambin, H. Poppe, H. Simmons, H.A. Priestley, H.A. Priestley, J. Lawson, J.W. Negrepontis, L. Vietoris, M.H. Stone, M.M. Bonsangue, P.R. Halmos, Pedro Nora, R. Cignoli, S. Celani, W. Tholen   +24 more
core   +1 more source

Monadic dynamic algebras [PDF]

, 2006
The main purpose of this work is to introduce the class of the monadic dynamic algebras (dynamic algebras with one quantifier). Similarly to a theorem of Kozen we establish that every separable monadic dynamic algebra is isomorphic to a monadic (possibly
Oliveira-Martins, M. Teresa, Pinto, M. Céu, Pinto, S. Marques   +2 more
core   +1 more source

Depth of Boolean algebras

, 2008
We prove a Theorem about the relationship between the Depth of the ultraproduct of Boolean algebras, divided by an ultrafilter, and the products of the depths of each component.
Garti, Shimon, Shelah, Saharon
core   +1 more source

Measures on Boolean algebras

, 2017
We present a necessary and sufficient condition for a Boolean algebra to carry a finitely additive ...
Jech, Thomas
core   +1 more source

Representability is not decidable for finite relation algebras [PDF]

, 2001
Published ...
Hirsch, R, Hodkinson, I
core   +2 more sources

(kappa,theta)-weak normality

, 2011
We characterize the situation of small cardinality for a product of cardinals divided by an ultrafilter. We develop the notion of weak normality.
Garti, Shimon, Shelah, Saharon
core   +1 more source

Convergence and submeasures in Boolean algebras [PDF]

, 2018
summary:A Boolean algebra carries a strictly positive exhaustive submeasure if and only if it has a sequential topology that is uniformly ...
Jech, Thomas
core   +1 more source

Closure Operations on Intuitionistic Linear Algebras

Annales Mathematicae Silesianae
In this paper, we introduce the notions of radical filters and extended filters of Intuitionistic Linear algebras (IL-algebras for short) and give some of their properties.
Tenkeu Jeufack Y.L., Alomo Temgoua E.R., Heubo-Kwegna O.A.   +2 more
doaj   +1 more source