Results 11 to 20 of about 565 (128)
Hyper-Minimization for Deterministic Weighted Tree Automata [PDF]
Electronic Proceedings in Theoretical Computer Science, 2014 Hyper-minimization is a state reduction technique that allows a finite change in the semantics. The theory for hyper-minimization of deterministic weighted tree automata is provided.
Andreas Maletti, Daniel Quernheim
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Algebraic Solution of Tropical Best Approximation Problems
Mathematics, 2023 We introduce new discrete best approximation problems, formulated and solved in the framework of tropical algebra, which deals with semirings and semifields with idempotent addition.
Nikolai Krivulin
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Pushing for weighted tree automata [PDF]
Logical Methods in Computer Science, 2018 A weight normalization procedure, commonly called pushing, is introduced for weighted tree automata (wta) over commutative semifields. The normalization preserves the recognized weighted tree language even for nondeterministic wta, but it is most useful ...
Thomas Hanneforth +2 more
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Switchings of semifield multiplications [PDF]
Designs, Codes and Cryptography, 2015 Let $B(X,Y)$ be a polynomial over $\mathbb{F}_{q^n}$ which defines an $\mathbb{F}_q$-bilinear form on the vector space $\mathbb{F}_{q^n}$, and let $ξ$ be a nonzero element in $\mathbb{F}_{q^n}$. In this paper, we consider for which $B(X,Y)$, the binary operation $xy+B(x,y)ξ$ defines a (pre)semifield multiplication on $\mathbb{F}_{q^n}$.
Hou, Xiang-dong +2 more
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Environmental Toxicology and Chemistry, Volume 42, Issue 11, Page 2400-2411, November 2023., 2023 Abstract Lethal and sublethal effects of pesticides on nontarget organisms are one of the causes of the current decline of many insect species. However, research in the past decades has focused primarily on pollinators, although other beneficial nontarget organisms such as parasitic wasps may also be affected.
Nils Schöfer +4 more
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Discussiones Mathematicae - General Algebra and Applications, 2004 Summary: It is well known that a semigroup \(S\) is a Clifford semigroup if and only if \(S\) is a strong semilattice of groups. We have recently extended this important result from semigroups to semirings by showing that a semiring \(S\) is a Clifford semiring if and only if \(S\) is a strong distributive lattice of skew-rings.
Sen, Mridul K. +2 more
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Pest Management Science, Volume 79, Issue 11, Page 4186-4196, November 2023., 2023 A Wolbachia‐free Aedes albopictus strain was developed and considered to be used for SIT programmes based on the comparable fitness cost, radiosensitivity and arbovirus susceptibility to its conspecifics. Abstract BACKGROUND The sterile insect technique (SIT) is a green and species‐specific insect pest control technique that suppresses target ...
Dong‐jing Zhang +11 more
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Decoding attraction: Improving vine weevil monitoring by exploiting key sensory cues
Pest Management Science, Volume 79, Issue 11, Page 4635-4643, November 2023., 2023 Vine weevil adults preferred black, tall and large‐diameter monitoring tools. Monitoring tool density influenced the number of vine weevils recorded in monitoring tools. By contrast plant density did not influence the number of weevils recorded in monitoring tools.
Eugenia Fezza +5 more
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Environmental Toxicology and Chemistry, Volume 42, Issue 9, Page 1857-1866, September 2023., 2023 Abstract Recovery, recolonization, and adaptation in a chemical stress context are processes that regenerate local populations and communities as well as the functions these communities perform. Recolonization, either by species previously present or by new species able to occupy the niches left empty, refers to a metacommunity process with stressed ...
Mirco Bundschuh +3 more
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Discussiones Mathematicae - General Algebra and Applications, 2004 Summary: We introduce the notions of ternary semi-integral domain and ternary semifield and study some of their properties. In particular we also investigate the maximal ideals of the ternary semiring \(\mathbb{Z}^-_0\).
Dutta, Tapan K., Kar, Sukhendu
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