Results 11 to 20 of about 120,136 (269)

F-derivations on residuated multilattices [PDF]

open access: yesJournal of Hyperstructures, 2019
In this paper, we introduce as a generalization of the concept of derivation, the notion of f-derivation on residuated multilattices and investigate several of its properties.
Celestin Lele   +3 more
doaj   +1 more source

Development and Validation of a Nomogram for Predicting the Risk of Adverse Cardiovascular Events in Patients with Coronary Artery Ectasia

open access: yesJournal of Cardiovascular Development and Disease, 2021
Coronary artery ectasia (CAE) is a rare finding and is associated with poor clinical outcomes. However, prognostic factors are not well studied and no prognostication tool is available.
Zhongxing Cai   +7 more
doaj   +1 more source

The Set Where an Approximate Derivative is a Derivative [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
Let f : [ 0 , 1 ]
openaire   +2 more sources

On Extended Neoteric Ranked Set Sampling Plan: Likelihood Function Derivation and Parameter Estimation

open access: yesComplexity, 2022
The extended neoteric ranked set sampling (ENRSS) plan proposed by Taconeli and Cabral has proven to outperform many one stages and two stages ranked set sampling plans when estimating the mean and the variance for different populations.
Fathy H. Riad   +5 more
doaj   +1 more source

Locally Nilpotent Sets of Derivations [PDF]

open access: yes, 2020
Let B be an algebra over a field k and let Der(B) be the set of k-derivations from B to B. We define what it means for a subset of Der(B) to be a locally nilpotent set. We prove some basic results about that notion and explore the following questions. Let L be a Lie subalgebra of Der(B); if every element of L is a locally nilpotent derivation then does
openaire   +2 more sources

On Equality of Certain Derivations of Lie Algebras

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2019
Let L be a Lie algebra. A derivation α of L is a commuting derivation (central derivation), if α (x) ∈ CL (x) (α (x) ∈ Z (L)) for each x ∈ L. We denote the set of all commuting derivations (central derivations) by 𝒟 (L) (Derz (L)).
Amiri Azita   +2 more
doaj   +1 more source

Categorization via movement: the syntax and semantics of ambos [PDF]

open access: yesDELTA: Documentação de Estudos em Lingüística Teórica e Aplicada, 2020
In order to explain the syntactic behavior and describe the meaning of the item ambos in Brazilian Portuguese, we propose, assuming the Distributed Morphology framework, (1) that the acategorial root amb- merges, in the syntactic derivation, to a D that ...
Alessandro Boechat de Medeiros   +2 more
doaj   +2 more sources

A model to predict unstable carotid plaques in population with high risk of stroke

open access: yesBMC Cardiovascular Disorders, 2020
Background Several models have been developed to predict asymptomatic carotid stenosis (ACS), however these models did not pay much attention to people with lower level of stenosis (
Junxiong Yin   +8 more
doaj   +1 more source

Generalized derivative and π-derivative for set-valued functions

open access: yesInformation Sciences, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yurilev Chalco-Cano   +2 more
openaire   +3 more sources

Set-Derivability of Multidimensional Aggregates

open access: yes, 1999
A common optimization technique in data warehouse environments is the use of materialized aggregates. Aggregate processing becomes complex, if partitions of aggregates or queries are materialized and reused later. Most problematic are the implication problems regarding the restriction predicates.
Jens Albrecht   +2 more
openaire   +3 more sources

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