3 papers
math.NA2026
Numerical reconstructions of a source term in a mobile-immobile diffusion model from the partial interior observation
Zhiwei Yang, Yikan Liu
We consider an inverse source problem in the two-time-scale mobile-immobile fractional diffusion model from partial interior observation. Theoretically, we combine the fractional D…
math.NA2026
Identifying the source term in a viscoelastic membrane with a Riemann-Liouville time derivative by the partial interior observation
Zhiwei Yang, Yikan Liu
This paper studies an inverse source problem for a viscoelastic membrane, where the material's memory effect is characterized by the Riemann-Liouville fractional derivative. The pr…
astro-ph.CO2025
Revisiting the Hubble constant, sound horizon and cosmography from late-time Universe observations
Zhiwei Yang, Tonghua Liu, Xiaolei Li
The Hubble tension has become one of the central problems in cosmology. In this work, we determine the Hubble constant and sound horizon by using the combination of Bar…