R. Nussbaum

activity

20032020

most citedIteration of order preserving subhomogeneous maps on a cone

33 citations · 34 across the 3 of their papers we have counts for

collaborators

Showing math.FAShow all

2 papers · 1 filter

math.FA2016

Detecting fixed points of nonexpansive maps by illuminating the unit ball

Bas Lemmens, Brian Lins, Roger Nussbaum

We give necessary and sufficient conditions for a nonexpansive map on a finite dimensional normed space to have a nonempty, bounded set of fixed points. Among other results we show…

math.FA2003★ 1 cited

Notes on the Second Eigenvalue of the Google Matrix

Roger Nussbaum

If $A$ is an $n \times n$ matrix whose $n$ eigenvalues are ordered in terms of decreasing modules, $∣ λ_{1} ∣ \geq ∣ λ_{2} ∣ \geq ...∣ λ_{n} ∣$ , it is often of interest to estimate $\frac{|λ_…