A modified Yamabe invariant and a Hopf conjecture
Differential Geometry
2012-08-01 v1
Abstract
In this paper we define the bi-orthogonal sectional curvature and we present two modified Yamabe invariants for compact 4-dimensional manifolds. In particular we obtained a relationship between one of these invariants and a Hopf conjecture.
Keywords
Cite
@article{arxiv.1207.7107,
title = {A modified Yamabe invariant and a Hopf conjecture},
author = {Ezio Araujo Costa},
journal= {arXiv preprint arXiv:1207.7107},
year = {2012}
}