4 papers
Homogenization on parallelizable Riemannian manifolds
Daniel Faraco, Luis Guijarro, Yaroslav Kurylev +1
We consider the problem of finding the homogenization limit of oscillating linear elliptic equations on an arbitrary parallelizable manifold . We replicate the concept of…
Decompositions of three-dimensional Alexandrov spaces
Luis Atzin Franco Reyna, Fernando Galaz-García, José Carlos Gómez-Larrañaga +2
We extend basic results in -manifold topology to general three-dimensional Alexandrov spaces (or Alexandrov -spaces for short), providing a unified framework for manifold and…
Riemannian Rigidity of the Parallel Postulate in Total Curvature
Jian Ge, Luis Guijarro, Pedro Solórzano
We prove that the Euclidean plane is the only Riemannian plane with total curvature and free of conjugate points that satisfies Playfair's version of the parallel postulate.
Every point in a Riemmanian manifold is critical
Fernando Galaz-Garcia, Luis Guijarro
We show that for any point in a closed Riemannian manifold , there exists at least one point such that is critical for the distance function from . We also s…