2 papers
gr-qc2026
Comment on ''The space-time line element for static ellipsoidal objects''
Antonio C. Gutiérrez-Piñeres
A recent paper proposes a static ellipsoidal space-time metric that reduces to Schwarzschild. After examining the corrected line element using Maple's Differential geometry package…
gr-qc2024
matching conditions for anisotropic fluids
Antonio C. Gutiérrez-Piñeres, Hernando Quevedo
The approach is an invariant formalism that utilizes the eigenvalues of the Riemann curvature tensor to match spacetimes across a specific matching surface. We apply this app…