4 papers
Isoperimetric Inequalities in the cube and torus
Ben Baker, Joseph Briggs, Manuel Fernandez +1
We prove an exact isoperimetric inequality for cubes and tori under the $\ell_{\infty} metric. As a corollary, we recover the celebrated grid edge-isoperimetric inequality of Bollo…
Improved -Isoperimetry for Convex Bodies via Mass Transport
Manuel Fernandez
We study isoperimetry for a convex body , . For a Borel set , let be the set of points in that c…
Spectral Concentration and Recovery in Sparse High-Dimensional Random Geometric Graphs
Manuel Fernandez, Yizhe Zhu
We study sparse threshold random geometric graphs generated by high-dimensional spherical or Gaussian latent vectors. Although each edge has marginal probability , shared latent…
Achieving the Kesten-Stigum bound in the non-uniform hypergraph stochastic block model
Manuel Fernandez, Ludovic Stephan, Yizhe Zhu
We study the community detection problem in the non-uniform hypergraph stochastic block model (HSBM), where hyperedges of varying sizes coexist. This setting captures higher-order…