Guofang Wei

activity

19942026

most citedOn the universal cover and the fundamental group of an

R C D^{*} (K, N)

-space

26 citations · 177 across the 51 of their papers we have counts for

collaborators

Showing 2007Show all

3 papers · 1 filter

math.DG2007★ 19 cited

Comparison Geometry for the Bakry-Emery Ricci Tensor

Guofang Wei, Will Wylie

For Riemannian manifolds with a measure $(M, g, e^{- f} d v o l_{g})$ we prove mean curvature and volume comparison results when the $\infty$ -Bakry-Emery Ricci tensor is bounded from belo…

math.MG2007

The Cut-off Covering Spectrum

Christina Sormani, Guofang Wei

We introduce the $R$ cut-off covering spectrum and the cut-off covering spectrum of a complete length space or Riemannian manifold. The spectra measure the sizes of localized holes…

math.DG2007

A Neumann Type Maximum Principle for the Laplace Operator on Compact Riemannian Manifolds

Guofang Wei, Rugang Ye

In this paper we present a proof of a Neumann type maximum principle for the Laplace operator on compact Riemannian manifolds. A key p oint is the simple geometric nature of the co…