D. W. Robinson

activity

20052009

most citedFlows and invariance for elliptic operators

3 citations · 5 across the 6 of their papers we have counts for

collaborators

7 papers

math.AP2009★ 3 cited

Flows and invariance for elliptic operators

A. F. M. ter Elst, Derek W. Robinson, Adam Sikora

Let $S$ be the submarkovian semigroup on $L_{2} (R^{d})$ generated by a self-adjoint, second-order, divergence-form, elliptic operator $H$ with $W^{1, \infty}$ coefficients $c_{kl}…

math.AP2009★ 2 cited

Conservation and invariance properties of submarkovian semigroups

A. F. M. ter Elst, Derek W. Robinson

Let $E$ be a Dirichlet form on $L_{2} (X)$ and $Ω$ an open subset of $X$ . Then one can define Dirichlet forms $E_{D}$ , or $E_{N}$ , corresponding to $E$ but wit…

math.OA2008

Quasi-diagonal flows

A. Kishimoto, D. W. Robinson

We introduce two notions for flows on quasi-diagonal C*-algebras, quasi-diagonal and pseudo-diagonal flows; the former being apparently stronger than the latter. We derive basic fa…

math.AP2008

Ellipticity and Ergodicity

Derek W. Robinson, Adam Sikora

Let $S = {S_{t}}_{t \geq 0}$ be the submarkovian semigroup on $L_2(\Ri^d)$ generated by a self-adjoint, second-order, divergence-form, elliptic operator $H$ with Lipschitz continuous c…

math.OA2007

Approximately inner derivations

Ola Bratteli, Akitaka Kishimoto, Derek W. Robinson

Let $α$ be an approximately inner flow on a $C^{*}$ algebra $A$ with generator $δ$ and let $δ_{n}$ denote the bounded generators of the approximating flows $α^{(n)}$ . We analyze the st…

math.AP2006

Positivity and strong ellipticity

A. F. M. ter Elst, Derek W. Robinson, Yueping Zhu

We consider second-order partial differential operators $H$ in divergence form on $\Ri^d$ with a positive-semidefinite, symmetric, matrix $C$ of real $L_{\infty}$ -coefficients and es…