Results 21 to 30 of about 565 (128)
International Journal of Mathematics and Mathematical Sciences, 1980 We consider three of Knuth's four classes of semi-fieldsKnuth [11]namely, those having dimension 2 over a nucleus and show that the autotopism group is solvable (Corollary 4.12). This generalizes a result of Hughes [5].
D. R. Hughes, M. J. Kallaher
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Free commutative semifields [PDF]
Bulletin of the Australian Mathematical Society, 1993 A description is obtained of the free semifields with both fundamental operations commutative.
B.J. Gardner, Ottó Steinfeld
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On automorphisms of semifields and semifield planes
Sibirskie Elektronnye Matematicheskie Izvestiya, 2016 Изучается взаимосвязь полуполевой проективной плоскости и ее координатизирующего полуполя с использованием линейного пространства и регулярного множества. Установлен геометрический смысл инволюторного автоморфизма конечного полуполя, доказаны некоторые его свойства.
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Journal of Combinatorial Theory, Series A, 1999 \textit{T. Penttila} and \textit{B. Williams} [Geom. Dedicata, to appear] have constructed a sporadic translation ovoid of the quadrangle \(Q(4, 3^5)\). Associated with this, there is a new (semifield) flock of a quadratic cone in \(\text{PG}(3,3^5)\), and hence a flock generalized quadrangle of order \((3^5,3^{10})\).
BADER, LAURA +2 more
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Bulletin of the Australian Mathematical Society, 1969 Extending the results of An†onovskiĭ, Bol†janskiĭ, and Sarymsakov on semifield metric spaces, the authors define a regular semifield metric to be one in which the distance in the standard Tychonoff product representation of a point from a disjoint closed set is nonzero.
Kleiber, Martin, Pervin, William J.
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Pest Management Science, Volume 81, Issue 8, Page 4471-4480, August 2025."Simulated warehouse": In this study, we take the step of testing existing and modified trap designs for Trogoderma after the release of T. granarium exclusively. This work will serve to evaluate trap efficacy, while providing a template for further attractant–kill research. The most effective trap was dome trap.
Paraskevi Agrafioti +5 more
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Phenology of Xylotrechus arvicola (Coleoptera: Cerambycidae) Adults in Spanish Vineyards
Australian Journal of Grape and Wine Research, Volume 2025, Issue 1, 2025.Background and Aims: The longicorn beetle Xylotrechus arvicola (Olivier) (Coleoptera: Cerambycidae) is an important pest in vineyards of the Iberian Peninsula. Previous studies have reported that different varieties of grapevines Vitis vinifera exhibit varying susceptibility to infestation by this species. Methods and Results: Adult X.
Álvaro Rodríguez-González +6 more
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Journal of Chemistry, Volume 2025, Issue 1, 2025.Biomimetic and synthetic advancements in natural pesticides are driving a transformative shift toward sustainable pest management, promoting agricultural productivity while preserving ecological balance. These innovative approaches are inspired by nature’s defense mechanisms, integrating cutting‐edge science to develop precise, effective, and ...
Mohammad Harun-Ur-Rashid +2 more
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Journal of Tropical Medicine, Volume 2025, Issue 1, 2025.Due to the increasing resistance to synthetic insecticides and the proliferation of resistant strains of malaria vectors, plant‐derived essential oils (EOs) are gaining prominence as an alternative for controlling Anopheles gambiae s.l. larvae.
Getnet Atenafu, Netuhsew Atnaf, Wei Wang
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Central Weak Nucleus Semifields
European Journal of Combinatorics, 1981 Using results of S. D. Cohen and the author, we characterize certain infinite families of finite semifields. This yields several infinite families of finite projective planes, all of which have order a power of 3, and which appear to be previously unknown.
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