Results 31 to 40 of about 385,134 (275)

Degree and class of caustics by reflection for a generic source [PDF]

open access: yes, 2013
We are interested in the study of caustics by reflection of irreducible algebraic planar curves (in the complex projective plane). We prove the birationality of the caustic map (for a generic light position).
Josse, Alfrederic, Pene, Francoise
core   +5 more sources

Algebraic Degrees of 3-Dimensional Polytopes

open access: yesVietnam Journal of Mathematics, 2022
AbstractResults of Koebe (Ber. Sächs. Akad. Wiss. Leipzig, Math.-phys. Kl. 88, 141–164, 1936), Schramm (Invent. Math. 107(3), 543560, 1992), and Springborn (Math. Z. 249, 513–517, 2005) yield realizations of 3-polytopes with edges tangent to the unit sphere. Here we study the algebraic degrees of such realizations.
Mara Belotti   +2 more
openaire   +5 more sources

On the Generalization of Butterfly Structure

open access: yesIACR Transactions on Symmetric Cryptology, 2018
Butterfly structure was proposed in CRYPTO 2016 [PUB16], and it can generate permutations ...
Yongqiang Li   +3 more
doaj   +1 more source

Constructing Higher Nonlinear Odd-Variable RSBFs With Optimal AI and Almost Optimal FAI

open access: yesIEEE Access, 2019
Rotation symmetric Boolean functions (RSBFs) are nowadays studied a lot because of its easy operations and good performance in cryptosystem. This paper constructs a new class of odd-variable RSBFs with optimal algebraic immunity (AI). The nonlinearity of
Yindong Chen   +5 more
doaj   +1 more source

Lower bounds on the class number of algebraic function fields defined over any finite field [PDF]

open access: yes, 2011
We give lower bounds on the number of effective divisors of degree $\leq g-1$ with respect to the number of places of certain degrees of an algebraic function field of genus $g$ defined over a finite field.
Ballet, Stéphane, Rolland, Robert
core   +2 more sources

Flexible algebras of degree two [PDF]

open access: yesTransactions of the American Mathematical Society, 1972
All known examples of simple flexible power-associative algebras of degree two are either commutative or noncommutative Jordan. In this paper we construct an algebra which is partially stable but not commutative and not a noncommutative Jordan algebra. We then investigate the multiplicative structure of those algebras which are partially stable over an
openaire   +2 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

Topological fractal networks introduced by mixed degree distribution [PDF]

open access: yes, 2006
Several fundamental properties of real complex networks, such as the small-world effect, the scale-free degree distribution, and recently discovered topological fractal structure, have presented the possibility of a unique growth mechanism and allow for ...
Albert   +33 more
core   +2 more sources

Generic planar algebraic vector fields are disintegrated

open access: yes, 2020
In this article, we study model-theoretic properties of algebraic differential equations of order $2$, defined over constant differential fields. In particular, we show that the set of solutions of a general differential equation of order $2$ and of ...
Jaoui, Rémi
core   +2 more sources

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