Results 31 to 40 of about 882,940 (266)
Sequences of weak solutions to a fourth-order elliptic problem
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2020 This paper contains some results of existence of infinitely many solutions to an elliptic equation involving the p(x)-biharmonic operator coupled with Navier boundary conditions where the nonlinearities depend on two real parameters and do not possess ...
Filippo Cammaroto
doaj +1 more source
Extended Convergence for Two Sixth Order Methods under the Same Weak Conditions
Foundations, 2023 High-convergence order iterative methods play a major role in scientific, computational and engineering mathematics, as they produce sequences that converge and thereby provide solutions to nonlinear equations.
Ioannis K. Argyros +3 more
doaj +1 more source
On the Weak Order of Orthogonal Groups [PDF]
Communications in Algebra, 2014 A structure of a complete lattice (in the sense of a poset) is defined on the underlying set of the orhtogonal group of a real Euclidean space, by a construction analogous to that of the weak order of a Coxeter system in terms of its root system. This gives rise to a complte rootoid in the sense of Dyer, with the orthogonal group as underlying group.
openaire +2 more sources
WEAK WELL ORDERS AND FRAÏSSÉ’S CONJECTURE
The Journal of Symbolic Logic, 2023 Abstract The notion of countable well order admits an alternative definition in terms of embeddings between initial segments. We use the framework of reverse mathematics to investigate the logical strength of this definition and its connection with Fraïssé’s conjecture, which has been proved by Laver. We also fill
Anton Freund, Davide Manca
openaire +2 more sources
Two weak solutions for some singular fourth order elliptic problems
Electronic Journal of Qualitative Theory of Differential Equations, 2016 In this paper, we establish the existence of at least two distinct weak solutions for some singular elliptic problems involving a $p$-biharmonic operator, subject to Navier boundary conditions in a smooth bounded domain in $\mathbb{R}^N$.
Lin Li
doaj +1 more source
On chains of matroids in the weak order
European Journal of Combinatorics, 2015 Weak maps in matroids originate an order called weak order. In this paper, we characterize some chains of matroids which cannot be increased with respect to the weak order. We also give conditions for a pair of matroids to have few non-common bases.
Manoel Lemos, Maria Isabelle Silva
openaire +1 more source
Selections and weak orderability [PDF]
Fundamenta Mathematicae, 2009 We answer a question of van Mill and Wattel by showing that there is a separable locally compact space which admits a continuous weak selection but is not weakly orderable. Furthermore, we show that a separable space which admits a continuous weak selection can be covered by two weakly orderable spaces.
Michael Hrušák, Iván Martínez-Ruiz
openaire +1 more source
Permutation graphs and the weak Bruhat order
The Art of Discrete and Applied Mathematics, 2022 Summary: Permutation graphs are graphs associated with permutations where edges represent inversions. We study different classes of permutation graphs and isomorphic permutation graphs. A complete answer of a basic isomorphism question is given for trees.
Brualdi, R.A., Dahl, Geir
openaire +2 more sources
Asymmetric second-order stochastic resonance weak fault feature extraction method
Measurement + Control, 2020 To solve the problem that the weak fault signal is difficult to extract under strong background noise, an asymmetric second-order stochastic resonance method is proposed.
Jiachen Tang, Boqiang Shi
doaj +1 more source
A High Order Accurate and Effective Scheme for Solving Markovian Switching Stochastic Models
Mathematics, 2021 In this paper, we propose a new weak order 2.0 numerical scheme for solving stochastic differential equations with Markovian switching (SDEwMS). Using the Malliavin stochastic analysis, we theoretically prove that the new scheme has local weak order 3.0 ...
Yang Li +3 more
doaj +1 more source