Results 211 to 220 of about 449,654 (297)

Nonconstant Positive Steady States for a Predator–Prey System With Signal‐Dependent Diffusion

Mathematische Nachrichten, EarlyView.
ABSTRACT This paper investigates a highly nonlinear predator–prey reaction–diffusion system featuring signal‐dependent prey diffusion, where the motility of the prey is modulated by a chemical signal released by predators. For unbounded functional responses, we establish the global‐in‐time existence and uniform‐in‐time boundedness of classical ...
Qigang Deng, Hao Shen, Ranchao Wu, Hao Wang   +3 more
wiley   +1 more source

Generation of multi-form exact wave solutions and linear stability analysis in the generalized (3+1)-D P-type plasma system using a modified extended mapping technique. [PDF]

Sci Rep
Ghayad MS, Ahmed HM, Badra NM, Rabie WB.
europepmc   +1 more source

Graded Differential Polynomial Rings

Mathematische Nachrichten, EarlyView.
ABSTRACT We study differential polynomial rings R[t;δ]$R[t;\delta]$ over Γ$\Gamma$‐graded rings, where Γ$\Gamma$ is an arbitrary group. We show that R[t;δ]$R[t;\delta]$ admits a Γ$\Gamma$‐grading compatible with that of R$R$ if and only if δ$\delta$ is a γ$\gamma$‐derivation for some γ∈CΓ(ΓR)$\gamma \in C_\Gamma (\Gamma _R)$, and that this grading is ...
Yassine Ait Mohamed
wiley   +1 more source

The Reduction Theorem for Leavitt Path Algebras of Labeled Graphs and Its Applications

Mathematische Nachrichten, EarlyView.
ABSTRACT We introduce a notion of labeled cycle for normal labeled spaces and prove a reduction theorem for Leavitt path algebras associated with labeled graphs. We show that every nonzero element can be reduced, by suitable left and right multiplication, either to a nonzero scalar multiple of a projection or to a polynomial supported on a labeled ...
Daniel Gonçalves, Nguyen Dinh Nam, Tran Giang Nam   +2 more
wiley   +1 more source

Homothetic symmetries of static plane symmetric spacetimes: A comparative study of energy-momentum tensor representations. [PDF]

PLoS One
Ullah W, Khan F, Al-Essa LA.
europepmc   +1 more source

How Much to Sell and When: Optimal Staged Divestiture of Patent‐Linked Royalty Claims Under Risk, Illiquidity, and Finite Horizon

Managerial and Decision Economics, EarlyView.
ABSTRACT Patent owners can sell a royalty interest in stages rather than all at once. This paper asks how much to sell now when claim values are uncertain, buyers are costly to reach, and patent expiry limits the time available. A decision model produces sale schedules that adjust to current value, the share retained, and time remaining.
Andreas Peters
wiley   +1 more source

Decision-Theoretic Ecological Optimization of the Curzon-Ahlborn Heat Engine. [PDF]

Entropy (Basel)
Huruntz KK, Ghukasyan LE, Vaseashta A, Gevorgyan AV.   +3 more
europepmc   +1 more source

Decoding the Gut‐Brain Axis: Multi‐Omics Reveals a Causal Chain Linking Human Genome, Gut Microbiota, Blood Metabolites, and Alertness in the Brain

Med Research, EarlyView.
This multi‐omics study identified genetic loci, gut microbiota, blood metabolites, and gray matter volumes of orbitofrontal cortex and cerebellum that were potentially relevant to alerting in healthy Chinese adults. Subsequent two‐step one‐sample Mendelian randomization further revealed a serial mediation pathway: Bacteroides intestinalis influences ...
Hongru Li, Chuansheng Chen, Ofir Turel, Yu Pu, Hong Chen, Tingyong Feng, Jiang Qiu, Xu Lei, Qinghua He   +8 more
wiley   +1 more source

Application of Fourier-Galois Spectra Analysers for Rotating Image Analysis. [PDF]

Polymers (Basel)
Shaltykova D, Kadyrzhan K, Suleimenov I, Seitenova G, Kopishev E.   +4 more
europepmc   +1 more source