Author

Ya-Hui Niu

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Open access Oct 2026

Stability and Hopf Bifurcation of a Delayed Fractional-Order ISR Rumor Propagation Model with Saturation Incidence

With the widespread adoption of internet technology globally, the propagation of rumors on social networks has attracted significant scholarly attention. This paper discusses a type of fractional-order rumor propagation model incorporating a saturation effect. In this model, it is assumed that the state of an ignorant...

Ahmadjan Muhammadhaji, Ya-Hui Niu · Fractal and Fractional · 0 citations

Preprint Sep 2026

Radial Symmetry and Strict Radial Decrease for Master Equations with Decreasing Radial Potentials

We study the master equation $ (\partial_t -\Delta)^{s} u(x,t) = R(|x|)f(u(x,t))\quad\mbox{in}\ \mathbb{R}^n\times\mathbb{R}, $ where $s\in(0,1)$, $R$ is positive and strictly decreasing in the radial variable, and $f$ is positive, locally Lipschitz, and satisfies $f'(0)<0$. Existing symmetry results for this operator...

Ya-Hui Niu · 0 citations