## Topological Methods in Nonlinear Analysis

- Topol. Methods Nonlinear Anal.
- Volume 6, Number 2 (1995), 207-233.

### Connected sum constructions for constant scalar curvature metrics

Rafe Mazzeo, Daniel Pollack, and Karen Uhlenbeck

#### Abstract

We give a general procedure for gluing together possibly noncompact manifolds of constant scalar curvature which satisfy an extra nondegeneracy hypothesis. Our aim is to provide a simple paradigm for making "analytic" connected sums. In particular, we can easily construct complete metrics of constant positive scalar curvature on the complement of certain conﬁgurations of an even number of points on the sphere, which is a special case of Schoen's [S1] well-known, difficult construction. Applications of this construction produces metrics with prescribed asymptotics. In particular, we produce metrics with cylindrical ends, the simplest type of asymptotic behaviour. Solutions on the complement of an infinite number of points are also constructed by an iteration of our construction.

#### Article information

**Source**

Topol. Methods Nonlinear Anal., Volume 6, Number 2 (1995), 207-233.

**Dates**

First available in Project Euclid: 16 November 2016

**Permanent link to this document**

https://projecteuclid.org/euclid.tmna/1479265331

**Mathematical Reviews number (MathSciNet)**

MR1399537

**Zentralblatt MATH identifier**

0866.58069

#### Citation

Mazzeo, Rafe; Pollack, Daniel; Uhlenbeck, Karen. Connected sum constructions for constant scalar curvature metrics. Topol. Methods Nonlinear Anal. 6 (1995), no. 2, 207--233. https://projecteuclid.org/euclid.tmna/1479265331