Results 1 to 10 of about 6,090,423 (307)

Associating Cognition With Amyloid Status Using Partially Ordered Set Analysis [PDF]

open access: yesFrontiers in Neurology, 2019
Background: The presence of brain amyloid-beta positivity is associated with cognitive impairment and dementia, but whether there are specific aspects of cognition that are most linked to amyloid-beta is unclear.
Sarah J.A. Carr   +18 more
doaj   +2 more sources

Majorization for partially ordered sets

open access: yesDiscrete Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Richard A Brualdi, Geir Dahl
exaly   +3 more sources

Ramsey Numbers for Partially-Ordered Sets [PDF]

open access: yesOrder, 2018
We present a refinement of Ramsey numbers by considering graphs with a partial ordering on their vertices. This is a natural extension of the ordered Ramsey numbers. We formalize situations in which we can use arbitrary families of partially-ordered sets to form host graphs for Ramsey problems. We explore connections to well studied Turán-type problems
Christopher Cox, Derrick Stolee
exaly   +3 more sources

Cancel culture [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2023
Let A, B, C, and D be posets. Assume C and D are finite with a greatest element. Also assume that AC ≅B D. Then there exist posets E, X, Y , and Z such that A ≅E X, B ≅E Y , C≅Y ×Z, and D≅X×Z. If C≅D, then A≅B.
Jonathan Farley
doaj   +1 more source

Does the endomorphism poset $P^P$ determine whether a finite poset $P$ is connected? An issue Duffus raised in 1978 [PDF]

open access: yesMathematica Bohemica, 2023
Duffus wrote in his 1978 Ph.D. thesis, "It is not obvious that $P$ is connected and $P^P\cong Q^Q$ imply that $Q$ is connected", where $P$ and $Q$ are finite nonempty posets.
Jonathan David Farley
doaj   +1 more source

A Partial Order OWA Operator for Solving the OWA Weighing Dilemma

open access: yesIEEE Access, 2023
Prior weights are necessary for the application of ordered weighted averaging (OWA) operators, but obtaining them is expensive and contentious, which restricts the application of operators.
Mingyu Li, Ruize Xu, Qinghua Chen
doaj   +1 more source

Predicting Online Item-Choice Behavior: A Shape-Restricted Regression Approach

open access: yesAlgorithms, 2023
This paper examines the relationship between user pageview (PV) histories and their itemchoice behavior on an e-commerce website. We focus on PV sequences, which represent time series of the number of PVs for each user–item pair.
Naoki Nishimura   +3 more
doaj   +1 more source

Finite partially ordered set and some of its properties

open access: yesBibechana, 2015
This paper focuses on some main properties of the finite partially ordered sets. These properties are furnished in the form of theorems. Here we have presented three such theorems. The first theorem is called as ‘duality theorem’.
RN Yadav   +3 more
doaj   +3 more sources

Order preserving maps on quantum measurements [PDF]

open access: yesQuantum, 2022
We study the partially ordered set of equivalence classes of quantum measurements endowed with the post-processing partial order. The post-processing order is fundamental as it enables to compare measurements by their intrinsic noise and it gives grounds
Teiko Heinosaari   +2 more
doaj   +1 more source

Representations of bornologies

open access: yesApplied General Topology, 2022
Bornologies abstract the properties of bounded sets of a metric space. But there are unbounded bornologies on a metric space like $\mathcal{P}(\RR)$ with the Euclidean metric.
Homeira Pajoohesh
doaj   +1 more source

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