### Speaker: Maria Fernanda Espinal Florez

### PUC – Santiago, Chile

### Date: Monday, October 16th, 2023 at 12 Santiago time

**Abstract:**

We study construction of a complete non-compact Riemannian metrics with positive constant \(σ_2\)-curvature, on the sphere \(\mathbb S^n\) with a prescribed singular set \(\Lambda\) given by a disjoint union of closed submanifolds whose dimension is positive and strictly less than \(\frac{n−\sqrt{ n}−2}{2}\). This is a fully non-linear problem, nevertheless, we show that the classical gluing method of Mazzeo-Pacard for the scalar curvature still works in this setting since the linearized operator has good mapping properties in weighted spaces. A necessary condition is that \(2 ≤ 2k < n\).

Joint work with M. Del Mar González and Lorenzo Mazzieri.

**Venue:** Sala de Seminarios, 5th floor, Beauchef 851 / Online via Zoom

**Chair:** Rayssa Caju