Results 51 to 60 of about 15,789 (130)
Periodic Solutions to a Ring of Identical Cells With Delay via the Equivariant Degree Method
International Journal of Differential Equations, Volume 2026, Issue 1, 2026.We investigate the existence and multiplicity of bifurcating solutions in a Hopfield–Cohen–Grossberg network with n identical components and time delays. Applying the equivariant degree method, we derive sufficient conditions guaranteeing periodic solutions and their multiplicities. Two examples are provided to exemplify the theoretical results.
Shi Yu, Igor Freire
wiley +1 more source
On the Approximation of Precision Matrices for Wide-Swath Altimetry
Remote SensingNew observations of ocean surface topography obtained by wide-swath satellite interferometry require new capabilities to process spatially correlated errors in order to assimilate these data into numerical models.
Max Yaremchuk +2 more
doaj +1 more source
Algebraic Connectivity Maximizing Regular Graphs: Special Case Analysis and Depth‐First Search
Concurrency and Computation: Practice and Experience, Volume 37, Issue 27-28, 25 December 2025.ABSTRACT The algebraic connectivity is an indicator of how well connected a graph is. It also characterizes the convergence speed of some dynamic processes over networks. In this paper, taking into account that homogeneous networks are modeled as regular graphs, we tackle the following problem: given a pair (n,k)$$ \left(n,k\right) $$ of positive ...
Masashi Kurahashi +3 more
wiley +1 more source
MicrobiologyOpen, Volume 14, Issue 6, December 2025.Optimized submerged fermentation of Clonostachys rosea under high aeration enhances production of submerged conidia and microsclerotia. Formulated propagules and antifungal metabolites, including sorbicillinoids, effectively control tomato gray mold, offering a promising strategy for biocontrol product development.
Gabriel Moura Mascarin +3 more
wiley +1 more source
Continuous-Time Quantum Walks on Directed Bipartite Graphs
, 2016 This paper investigates continuous-time quantum walks on directed bipartite graphs based on a graph's adjacency matrix. We prove that on bipartite graphs, probability transport between the two node partitions can be completely suppressed by tuning a ...
Blattner, Marcel +5 more
core +1 more source
Numerical Linear Algebra with Applications, Volume 32, Issue 6, December 2025.ABSTRACT In this work, we propose a novel preconditioned minimal residual method for a class of real, nonsymmetric multilevel block Toeplitz systems, which generalizes an ideal preconditioner established in [J. Pestana. Preconditioners for symmetrized Toeplitz and multilevel Toeplitz matrices. SIAM Journal on Matrix Analysis and Applications, 40(3):870–
Grigorios Tachyridis, Sean Y. Hon
wiley +1 more source
On self-dual double circulant codes
, 2016 Self-dual double circulant codes of odd dimension are shown to be dihedral in even characteristic and consta-dihedral in odd characteristic. Exact counting formulae are derived for them and used to show they contain families of codes with relative ...
Alahmadi, Adel +2 more
core +2 more sources
Low‐Rank Geostatistical Inversion for Spatiotemporal Heterogeneity of Aquitard Hydraulic Parameters
Water Resources Research, Volume 61, Issue 12, December 2025.Abstract Many hydrogeological processes are intricately linked to both the spatial heterogeneity and temporal dynamics of the involved parameters. The variability in hydrogeological parameters across both space and time domains is defined as the spatiotemporal heterogeneity.
Chao Zhuang +8 more
wiley +1 more source
Transactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.Abstract In subwavelength physics, a challenging problem is to characterise the spectral properties of finite systems of subwavelength resonators. In particular, it is important to identify localised modes as well as bandgaps and associated mobility edges.
Habib Ammari +2 more
wiley +1 more source
Multipartite circulant states with positive partial transposes [PDF]
, 2007 We construct a large class of multipartite qudit states which are positive under the family of partial transpositions. The construction is based on certain direct sum decomposition of the total Hilbert space displaying characteristic circular structure ...
Chruscinski, Dariusz +1 more
core +1 more source