Results 31 to 40 of about 7,408,822 (366)
We introduce and study a special class of ideals, called tropical ideals, in the semiring of tropical polynomials, with the goal of developing a useful and solid algebraic foundation for tropical geometry. The class of tropical ideals strictly includes the tropicalizations of classical ideals, and allows us to define subschemes of tropical toric ...
Maclagan, Diane, Rincon, Felipe
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The purpose of this study was to test the hypothesis that the genetic diversity of commercially significant species of King Crabs (Lithodes spp.) along the south‐eastern Pacific (SEP) comprises different independent evolutionary units (IEUs) with ...
Ramona Pinochet+2 more
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Fabrication and Simulation of an E-Vehicle [PDF]
An electric vehicle is one that is powered by on-board electric sources and is driven by electric motors. Electric vehicles have emerged only because of the rise in cost of fuels and pollution.
Anusha Poodipeddi+3 more
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THE IDEALS OF AN IDEAL EXTENSION [PDF]
Given two unital associative rings R ⊆ S, the ring S is said to be an ideal (or Dorroh) extension of R if S = R ⊕ I, for some ideal I ⊆ S. In this note, we investigate the ideal structure of an arbitrary ideal extension of an arbitrary ring R. In particular, we describe the Jacobson and upper nil radicals of such a ring, in terms of the Jacobson and ...
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An annotated catalogue of the 63 species of hawkmoths (Sphingidae) from the Reserva Natural Rancho Laguna Blanca (RNLB) is provided, representing 66.32% of the species documented in Paraguay.
Paul Smith+4 more
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Connectedness modulo an ideal [PDF]
For a topological space $X$ and an ideal $\mathscr{H}$ of subsets of $X$ we introduce the notion of connectedness modulo $\mathscr{H}$. This notion of connectedness naturally generalizes the notion of connectedness in its usual sense. In the case when $X$
Koushesh, M. R.
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Two new species of Hyalella (Amphipoda, Dogielinotidae) from the Humid Chaco ecoregion of Paraguay [PDF]
The freshwater amphipod genus Hyalella Smith, 1874 is widely distributed in the Neotropics, with several biogeographically restricted species and a high cryptic diversity throughout South America.
Giovanni Mussini+2 more
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The multiplier ideals of a sum of ideals [PDF]
We prove that if a _ \underline {\mathbf {a}} , b _ ⊆ O X \underline {\mathbf {b}}\subseteq \mathcal {O}_X are nonzero sheaves of ideals on a complex smooth variety
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On (semi)topology L-algebras [PDF]
Here, we define (semi)topological L-algebras and some related results are approved. Then we deduce conditions that mention an L-algebra to be a semi-topological or a topological L-algebra and we check some attributes of them.
Mona Aaly Kologani
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