Results 21 to 30 of about 91,967 (303)

The General Inner-Outer Factorization Problem for Discrete-Time Systems [PDF]

open access: yes, 1999
In this paper we give a theoretical and a computational solution to the most general inner-outer factorization problem formulated for a discrete-time system G.
A. Varga   +3 more
core   +1 more source

Empirical study on the construction of a cognitive model of factorization in eighth-grade students

open access: yesFrontiers in Psychology, 2023
The construction of cognitive models is the basis for cognitive diagnosis, and the cognitive models will change based on the purpose of the study. According to the purpose of mathematical education, the cognitive factorization model is constructed based ...
Xu Zhangtao   +4 more
doaj   +1 more source

Analysis of the RSA-cryptosystem in abstract number rings

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2020
Quantum computers can be a real threat to some modern cryptosystems (such as the RSA-cryptosystem). The analogue of the RSA-cryptosystem in abstract number rings is not affected by this threat, as there are currently no factorization algorithms using ...
Nikita V. Kondratyonok
doaj   +1 more source

Towards Ordinal Data Science [PDF]

open access: yesTransactions on Graph Data and Knowledge, 2023
Order is one of the main instruments to measure the relationship between objects in (empirical) data. However, compared to methods that use numerical properties of objects, the amount of ordinal methods developed is rather small.
Stumme, Gerd   +2 more
doaj   +1 more source

Butterfly Factorization [PDF]

open access: yesMultiscale Modeling & Simulation, 2015
The paper introduces the butterfly factorization as a data-sparse approximation for the matrices that satisfy a complementary low-rank property. The factorization can be constructed efficiently if either fast algorithms for applying the matrix and its adjoint are available or the entries of the matrix can be sampled individually.
Yingzhou Li   +4 more
openaire   +4 more sources

Zero product preserving bilinear operators acting in sequence spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
Consider a couple of sequence spaces and a product function $-$ a canonical bilinear map associated to the pointwise product $-$ acting in it. We analyze the class of "zero product preserving" bilinear operators associated with this product, that are ...
E. Erdoğan
doaj   +1 more source

The Category of Factorization

open access: yesApplied Categorical Structures, 2020
We introduce and investigate the category of factorization of a multiplicative, commutative, cancellative, pre-ordered monoid $A$, which we denote $\mathcal{F}(A)$. The objects of $\mathcal{F}(A)$ are factorizations of elements of $A$, and the morphisms in $\mathcal{F}(A)$ encode combinatorial similarities and differences between the factorizations. We
Brandon Goodell, Sean Sather-Wagstaff
openaire   +4 more sources

Shifted Riccati Procedure: Application to Conformal Barotropic FRW Cosmologies

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
In the case of barotropic FRW cosmologies, the Hubble parameter in conformal time is the solution of a simple Riccati equation of constant coefficients.
Haret C. Rosu, Kira V. Khmelnytskaya
doaj   +1 more source

Continuous Homomorphisms Defined on (Dense) Submonoids of Products of Topological Monoids

open access: yesAxioms, 2020
We study the factorization properties of continuous homomorphisms defined on a (dense) submonoid S of a Tychonoff product D = ∏ i ∈ I D i of topological or even topologized monoids.
Mikhail Tkachenko
doaj   +1 more source

The Biopsychosocial Factor [PDF]

open access: yesPsychotherapy and Psychosomatics, 2012
medical practice; rather in significant part it is engaged in special interest advocacy, pursuing and preserving social power’ [ 5 , p. 11]. How could Engel and Holman identify the dangers of special interest groups, as they are sadly known these days [6] , in the 1970s is astonishing. Biomedical reductionism is the key to the success of pharmaceutical
FAVA, GIOVANNI ANDREA   +3 more
openaire   +5 more sources

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