Results 31 to 40 of about 7,408,822 (366)

Tropical ideals [PDF]

open access: yesCompositio Mathematica, 2018
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
openaire   +6 more sources

Assessing diversity of King Crab Lithodes spp. in the south‐eastern pacific using phylogeny and molecular species delimitation methods

open access: yesEcology and Evolution, 2022
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
doaj   +1 more source

Fabrication and Simulation of an E-Vehicle [PDF]

open access: yesE3S Web of Conferences
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
doaj   +1 more source

THE IDEALS OF AN IDEAL EXTENSION [PDF]

open access: yesJournal of Algebra and Its Applications, 2010
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 ...
openaire   +3 more sources

The hawkmoths (Insecta, Lepidoptera, Sphingidae) of Rancho Laguna Blanca, Departamento San Pedro, Paraguay with documentation of five new country records

open access: yesRevista del Museo de La Plata, 2017
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
doaj   +1 more source

Connectedness modulo an ideal [PDF]

open access: yes, 2016
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.
core   +1 more source

Two new species of Hyalella (Amphipoda, Dogielinotidae) from the Humid Chaco ecoregion of Paraguay [PDF]

open access: yesZooKeys
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
doaj   +3 more sources

Ideals and Idealism [PDF]

open access: yesThe Journal of the National Dental Association, 1918
n ...
openaire   +2 more sources

The multiplier ideals of a sum of ideals [PDF]

open access: yesTransactions of the American Mathematical Society, 2001
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
openaire   +3 more sources

On (semi)topology L-algebras [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2023
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
doaj   +1 more source

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