Results 31 to 40 of about 275,582 (319)

Piecewise algebraic curve

open access: yesJournal of Computational and Applied Mathematics, 2002
AbstractA piecewise algebraic curve is defined by a bivariate spline function. Using the techniques of the B-net form of bivariate splines function, discriminant sequence of polynomial (cf. Yang Lu et al. (Sci. China Ser. E 39(6) (1996) 628) and Yang Lu et al.
Yi-Sheng Lai, Ren-Hong Wang
openaire   +2 more sources

An Upper Bound of the Bezout Number for Piecewise Algebraic Curves over a Rectangular Partition

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
A piecewise algebraic curve is a curve defined by the zero set of a bivariate spline function. Given two bivariate spline spaces (Δ) over a domain D with a partition Δ, the Bezout number BN(m,r;n,t;Δ) is defined as the maximum finite number of the ...
Feng-Gong Lang, Xiao-Ping Xu
doaj   +1 more source

Symmetry breaking in quantum curves and super Chern-Simons matrix models

open access: yesJournal of High Energy Physics, 2019
It was known that quantum curves and super Chern-Simons matrix models correspond to each other. From the viewpoint of symmetry, the algebraic curve of genus one, called the del Pezzo curve, enjoys symmetry of the exceptional algebra, while the super ...
Naotaka Kubo   +2 more
doaj   +1 more source

Algebraic curves and maximal arcs [PDF]

open access: yesJournal of Algebraic Combinatorics, 2008
3 Figures Several changes advised by the ...
AGUGLIA, Angela   +2 more
openaire   +4 more sources

Algebraic curves and cryptography

open access: yesFinite Fields and Their Applications, 2005
AbstractAlgebraic curves over finite fields are being extensively used in the design of public-key cryptographic schemes. This paper surveys some topics in algebraic curve cryptography, with an emphasis on recent developments in algorithms for the elliptic and hyperelliptic curve discrete logarithm problems, and computational problems in pairing-based ...
Steven D. Galbraith, Alfred Menezes
openaire   +1 more source

A linking invariant for algebraic curves [PDF]

open access: yesL’Enseignement Mathématique, 2020
We construct a topological invariant of algebraic plane curves, which is in some sense an adaptation of the linking number of knot theory. This invariant is shown to be a generalization of the \mathcal I -invariant of line arrangements developed by the first author with Artal and Florens.
Guerville-Ballé, Benoît   +1 more
openaire   +5 more sources

On a class of invariant algebraic curves for Kukles systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we give a new upper bound for the degree of a class of transversal to infinity invariant algebraic curves for polynomial Kukles systems of arbitrary degree.
Osvaldo Osuna   +2 more
doaj   +1 more source

Algebraic Curves and Their Applications

open access: yes, 2019
An irreducible, algebraic curve $\mathcal X_g$ of genus $g\geq 2$ defined over an algebraically closed field $k$ of characteristic $\mbox{char } \, k = p \geq 0$, has finite automorphism group $\mbox{Aut} (\mathcal X_g)$. In this paper we describe methods of determining the list of groups $\mbox{Aut} (\mathcal X_g)$ for a fixed $g\geq 2$.
Broughton, Allen   +2 more
openaire   +3 more sources

On convolutions of algebraic curves

open access: yesJournal of Symbolic Computation, 2010
AbstractWe focus on the investigation of relations between plane algebraic curves and their convolution. Since the convolution of irreducible algebraic curves is not necessarily irreducible, an upper bound for the number of components is given. Then, a formula expressing the convolution degree using the algebraic degree and the genus of the curve is ...
Jan Vrek, Miroslav Lávika
openaire   +1 more source

Modeling net ecosystem carbon balance and loss in coastal wetlands exposed to sea‐level rise and saltwater intrusion

open access: yesEcological Applications, Volume 32, Issue 8, December 2022., 2022
Abstract Coastal wetlands are globally important stores of carbon (C). However, accelerated sea‐level rise (SLR), increased saltwater intrusion, and modified freshwater discharge can contribute to the collapse of peat marshes, converting coastal peatlands into open water.
Khandker S. Ishtiaq   +8 more
wiley   +1 more source

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