Reentrant Spin Glass and Large Coercive Field Observed in a Spin Integer Dimerized Honeycomb Lattice
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Functional Materials"
DOI: 10.1002/adfm.202004744
Abstract: 2D magnetic materials with dimerized honeycomb lattices can be treated as mixed‐spin square lattices, in which a quantum phase transition may occur to realize the Bose–Einstein condensation of magnons under reachable experimental conditions. However, this… read more here.
Keywords: spin glass; microscopy; dimerized honeycomb; integer ... See more keywords
Optimal connected subgraphs: Integer programming formulations and polyhedra
Sign Up to like & getrecommendations! Published in 2022 at "Networks"
DOI: 10.1002/net.22101
Abstract: Connectivity is a central concept in combinatorial optimization, graph theory, and operations research. In many applications, one is interested in finding an optimal subset of vertices with the essential requirement that the vertices are connected,… read more here.
Keywords: integer; programming formulations; connected subgraphs; optimal connected ... See more keywords
Monochromatic sums of squares
Sign Up to like & getrecommendations! Published in 2018 at "Mathematische Zeitschrift"
DOI: 10.1007/s00209-017-1943-7
Abstract: For any integer $$K\ge 1$$K≥1 let s(K) be the smallest integer such that in any colouring of the set of squares of the integers in K colours every large enough integer can be written as… read more here.
Keywords: log log; integer; monochromatic sums; sums squares ... See more keywords
On Tree-Connectivity and Path-Connectivity of Graphs
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DOI: 10.1007/s00373-021-02376-9
Abstract: Let G be a graph and k an integer with $$2\le k\le n$$ 2 ≤ k ≤ n . The k -tree-connectivity of G , denoted by $$\kappa _k(G)$$ κ k ( G ) ,… read more here.
Keywords: integer; connectivity; ell ell; tree connectivity ... See more keywords
A note on linearized reformulations for a class of bilevel linear integer problems
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Operations Research"
DOI: 10.1007/s10479-017-2694-x
Abstract: We consider reformulations of a class of bilevel linear integer programs as equivalent linear mixed-integer programs (linear MIPs). The most common technique to reformulate such programs as a single-level problem is to replace the lower-level… read more here.
Keywords: integer; bilevel linear; linear integer; reformulations class ... See more keywords
A novel hybrid image fusion method based on integer lifting wavelet and discrete cosine transformer for visual sensor networks
Sign Up to like & getrecommendations! Published in 2018 at "Multimedia Tools and Applications"
DOI: 10.1007/s11042-018-6676-z
Abstract: In recent years, multimedia data is most used in the world such as image, audio, video and text. For reducing the great amount of generated data and for obtaining the better sensing performance, several researches… read more here.
Keywords: image; integer; visual sensor; method ... See more keywords
Bootstrapping of integer concepts: the stronger deviant-interpretation challenge (and how to solve it)
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DOI: 10.1007/s11229-021-03046-2
Abstract: Beck (Cognition 158:110–121, 2017) presents an outline of the procedure of bootstrapping of integer concepts, with the purpose of explicating the account of Carey (The Origin of Concepts, 2009). According to that theory, integer concepts… read more here.
Keywords: interpretation challenge; integer; deviant interpretation; challenge ... See more keywords
The cost of not knowing enough: mixed-integer optimization with implicit Lipschitz nonlinearities
Sign Up to like & getrecommendations! Published in 2021 at "Optimization Letters"
DOI: 10.1007/s11590-021-01827-9
Abstract: It is folklore knowledge that nonconvex mixed-integer nonlinear optimization problems can be notoriously hard to solve in practice. In this paper we go one step further and drop analytical properties that are usually taken for… read more here.
Keywords: implicit; knowing enough; integer; mixed integer ... See more keywords
Every integer can be written as a square plus a squarefree
Sign Up to like & getrecommendations! Published in 2021 at "Expositiones Mathematicae"
DOI: 10.1016/j.exmath.2021.12.002
Abstract: In the paper we can prove that every integer can be written as the sum of two integers, one perfect square and one squarefree. We also establish the asympotic formula for the number of representations… read more here.
Keywords: square plus; integer written; written square; plus squarefree ... See more keywords
Multiple reciprocal sums and multiple reciprocal star sums of polynomials are almost never integers
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DOI: 10.1016/j.jnt.2018.06.005
Abstract: Let $n$ and $k$ be integers such that $1\le k\le n$ and $f(x)$ be a nonzero polynomial of integer coefficients such that $f(m)\ne 0$ for any positive integer $m$. For any $k$-tuple $\vec{s}=(s_1, ..., s_k)$… read more here.
Keywords: integer; vec integers; vec vec; never integers ... See more keywords
Fractional delay filter based repetitive control for precision tracking: Design and application to a piezoelectric nanopositioning stage
Sign Up to like & getrecommendations! Published in 2022 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.108249
Abstract: Abstract The development of nanotechnology requires a precision tracking of periodic signals in order to complete repetitive industrial or scientific tasks. Although repetitive control is an intuitive choice to realize precisely periodic signal’s tracking, an… read more here.
Keywords: repetitive control; control; integer; fractional delay ... See more keywords