7 papers
Numerical approximation of the first -Laplace eigenpair
Hannah Potgieter, Razvan C. Fetecau, Steven J. Ruuth
We approximate the first Dirichlet eigenpair of the -Laplace operator for on both Euclidean and surface domains. We emphasize large values and discuss ho…
Ground states and phase transitions for an aggregation model with fast diffusion on sphere
Razvan C. Fetecau, Hansol Park
We consider a free energy on the sphere that contains an entropy associated to nonlinear fast diffusion, and a nonlocal interaction energy. The two components of the free energy co…
Swarming models with specular boundary condition and environmental noise
Razvan C. Fetecau, Hui Huang, Jinniao Qiu
We investigate a general class of models for swarming/self-collective behaviour in domains with boundaries. The model is expressed as a stochastic system of interacting particles s…
Bifurcation of global energy minimizers for a diffusion-aggregation model on sphere
Razvan C. Fetecau, Hansol Park, Vishnu Vaidya
We consider a free energy functional defined on probability densities on the unit sphere , and investigate its global minimizers. The energy consists of two component…
Global energy minimizers for a diffusion-aggregation model on sphere
Razvan C. Fetecau, Hansol Park, Vishnu Vaidya
We investigate the ground states of a free energy functional on sphere. The energy consists of an entropy and a nonlocal interaction term that are in competition with each other, a…
Geodesic distance approximation using a surface finite element method for the -Laplacian
Hannah Potgieter, Razvan C. Fetecau, Steven J. Ruuth
We use the -Laplacian with large -values in order to approximate geodesic distances to features on surfaces. This differs from Fayolle and Belyaev's (2018) [1] computational…