Results 31 to 40 of about 3,573,561 (343)

Model of a Photovoltaic Cell for the MatLab/Simulink SimPowerSystems Library

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2019
A new Simulink model of a photovoltaic cell has been proposed. The model is focused on the use of a standard SimPowerSystems library with power engineering elements from the MatLab/Simulink software package.
D. I. Zalizny
doaj   +1 more source

Limit Cycles of Polynomially Integrable Piecewise Differential Systems

open access: yesAxioms, 2023
In this paper, we study how many algebraic limit cycles have the discontinuous piecewise linear differential systems separated by a straight line, with polynomial first integrals on both sides.
Belén García   +3 more
doaj   +1 more source

Regulators and cycle maps in higher-dimensional differential algebraic K-theory [PDF]

open access: yes, 2015
We develop differential algebraic K-theory of regular arithmetic schemes. Our approach is based on a new construction of a functorial, spectrum level Beilinson regulator using differential forms.
Bunke, Ulrich, Tamme, Georg
core   +1 more source

The j-invariant of a plane tropical cubic [PDF]

open access: yes, 2007
Several results in tropical geometry have related the j-invariant of an algebraic plane curve of genus one to the cycle length of a tropical curve of genus one.
Katz, Eric   +2 more
core   +3 more sources

On the degree of algebraic cycles on hypersurfaces

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 2022
Abstract Let X ⊂ ℙ 4
openaire   +2 more sources

Retailer’s lot-sizing policy under two warehouses and two levels of delay permitted using algebraic method [PDF]

open access: yesYugoslav Journal of Operations Research, 2007
The main purpose of this paper is to modify Huang’s model [13] by considering two warehouses. In addition, we try to use algebraic method to determine the optimal lot-sizing policy for the retailer under two warehouses and two levels of delay permitted ...
Huang Yung-Fu, Lai Chih-Sung
doaj   +1 more source

Some results on homoclinic and heteroclinic connections in planar systems [PDF]

open access: yes, 2009
Consider a family of planar systems depending on two parameters $(n,b)$ and having at most one limit cycle. Assume that the limit cycle disappears at some homoclinic (or heteroclinic) connection when $\Phi(n,b)=0.$ We present a method that allows to ...
Andronov A A   +12 more
core   +4 more sources

Cycles on Algebraic Varieties [PDF]

open access: yesNagoya Mathematical Journal, 1955
In the present note, applying the theory of harmonic integrals, we shall show some results on cycles on algebraic varieties and give a new birational invariant.
openaire   +3 more sources

The eleventh cohomology group of $\overline {\mathcal {M}}_{g,n}$

open access: yesForum of Mathematics, Sigma, 2023
We prove that the rational cohomology group $H^{11}(\overline {\mathcal {M}}_{g,n})$ vanishes unless $g = 1$ and $n \geq 11$ . We show furthermore that $H^k(\overline {\mathcal {M}}_{g,n})$ is pure Hodge–Tate for all even ...
Samir Canning, Hannah Larson, Sam Payne
doaj   +1 more source

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