Smoothing of singular intersections of ellipsoids: pyramitoid

Enrique Artal Bartolo; Santiago López de Medrano; María Teresa Lozano Imízcoz

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arXiv · 2605.00263

Smoothing of singular intersections of ellipsoids: pyramitoid

Enrique Artal Bartolo·Santiago López de Medrano·María Teresa Lozano Imízcoz

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Abstract

The goal of this work is to continue the study the smoothings of 3-dimensional manifolds with singularities obtained as small covers of non simple right-angle Coxeter polyhedral orbifolds. They appear in the study of coaxial intersections of ellipsoids. In particular we introduce the concept of $n$-pyramitoid generalizing the $n$-pyramid.

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Enrique Artal Bartolo, Santiago López de Medrano, María Teresa Lozano Imízcoz. 2026-04-30. Smoothing of singular intersections of ellipsoids: pyramitoid. https://arxiv.org/abs/2605.00263

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