Results 71 to 80 of about 1,668 (199)
The Mathematical History Behind the Granger–Johansen Representation Theorem
Oxford Bulletin of Economics and Statistics, EarlyView.ABSTRACT When can a vector time series that is integrated once (i.e., becomes stationary after taking first differences) be described in error correction form? The answer to this is provided by the Granger–Johansen representation theorem. From a mathematical point of view, the theorem can be viewed as essentially a statement concerning the geometry of ...
Johannes M. Schumacher
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Journal of Algebra, 2005 The authors define a generalized MV-algebra (GMV-algebra for short) as a residuated lattice satisfying the identities \(x/((x\vee y)\setminus x)=x\vee y=(x/((x\vee y))\setminus x\). A closure operator \(\gamma\) on a residuated lattice \(\mathbf L\) such that \(\gamma(a)\gamma(b)\leqq \gamma(ab)\) for all \(a,b\in L\) is called a nucleus on \(L\); the ...
Galatos, Nikolaos, Tsinakis, Constantine
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Least Trimmed Squares: Cointegration and Outliers
Oxford Bulletin of Economics and Statistics, EarlyView.ABSTRACT When applying the cointegrated autoregressive distributed lag model it is common to include indicator variables for outliers. This is often done in a somewhat ad hoc way. Least Trimmed Squares estimation provides a more systematic approach. This estimator is robust to a large number of outliers of many types.
Vanessa Berenguer‐Rico, Bent Nielsen
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Relation Between Be-Algebras and G-Hilbert Algebras
Discussiones Mathematicae - General Algebra and Applications, 2018 Hilbert algebras are important tools for certain investigations in algebraic logic since they can be considered as fragments of any propositional logic containing a logical connective implication and the constant 1 which is considered as the logical ...
Rezaei Akbar, Saeid Arsham Borumand
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Mathematica Slovaca, 2008 Abstract In a recent paper [CHAJDA, I.—KÜHR, J.: A non-associative generalization of MV-algebras, Math. Slovaca 57, (2007), 301–312], authors introduced and studied a non-associative generalization of MV-algebras called NMV-algebras. In contrast to MV-algebras, sections (i.e. principal filters) in NMV-algebras which are proper (i.e.
Halaš, Radomír, Plojhar, Luboš
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Electromyographic Assessment of Sleep Bruxism in Patients With Periodontitis: A Case–Control Study
Oral Diseases, EarlyView.ABSTRACT Objective The relationship between periodontitis and bruxism has always been a matter of debate. The aim of the present paper is to investigate the association between advanced stages of periodontitis (Stage III/IV) and the intensity and duration of sleep bruxism events, measured as bruxism work index (BWI) and bruxism time index (BTI) through
Tommaso Gotti +5 more
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Follow Me Into Math: Near‐Peer Influencers Take the Stage
School Science and Mathematics, EarlyView.ABSTRACT Young people like to be entertained, and to entertain others. What if students were to invest enough of their time and effort into learning topics from our mathematics courses to become experts in the eyes of their peers? In this study we positioned college students and high school students as mathematical performers on the stage in front of ...
Aaron T. Wilson +3 more
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A New Approach to Near Approximation in Fuzzy Ideals of an MV-Algebras
Foundations of Computing and Decision SciencesThe rough set concept was originally proposed by Pawlak as a formal tool for modeling incompleteness and imprecision in information systems. Rough set theory is an extension of set theory in which a subset of a universe is described by a pair of sets ...
Jokar Fatemeh, Davvaz Bijan
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Journal of Mathematical Analysis and Applications, 1999 The aim of this paper is to go deeper into the questions of MV-algebras provided with square roots. Höhle proposed a classification of MV-algebras with square roots, introducing the strict MV-algebras and proving that every MV-algebra with square roots is exactly a Boolean algebra, or a strict algebra, or isomorphic to the product of both. Due to their
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The Journal of Physiology, EarlyView.Abstract figure legend Schematic overview of the experimental and computational framework for investigating hiPSC‐CM electrophysiology with MEA systems. The MEA‐based model integrates experimental data with phenotype‐specific ionic models and tissue‐level heterogeneity.
Sofia Botti +2 more
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