3 citations · 3 across the 6 of their papers we have counts for
6 papers
The obstacle problem for subelliptic non-divergence form operators on homogeneous groups
Marie Frentz, Heather Griffin
The main result established in this paper is the existence and uniqueness of strong solutions to the obstacle problem for a class of subelliptic operators in non-divergence form. T…
A subalgebra of the Hardy algebra relevant in control theory and its algebraic-analytic properties
Marie Frentz, Amol Sasane
We denote by A_0+AP_+ the Banach algebra of all complex-valued functions f defined in the closed right half plane, such that f is the sum of a holomorphic function vanishing at inf…
Boundary Behavior of Subelliptic Parabolic Equations on Time-Dependent Domains
Marie Frentz, Elin Götmark
In this paper we study the boundary behavior of solutions of a divergence-form subelliptic heat equation in a time-varying domain Ωin R^{n+1}, structured on a set of vector fields…
Regularity in the Obstacle Problem for Parabolic Non-divergence Operators of Hörmander type
Marie Frentz
In this paper we continue the study initiated in [FGN] concerning the obstacle problem for a class of parabolic non-divergence operators structured on a set of vector fields X = {X…
Reformulation of the extension of the -metric for
Marie Frentz, Amol Sasane
The classical nu-metric introduced by Vinnicombe in robust control theory for rational plants was extended to classes of nonrational transfer functions in Ball and Sasane [Complex…
Non-divergence form parabolic equations associated with non-commuting vector fields: Boundary behavior of nonnegative solutions
M. Frentz, N. Garofalo, E. Götmark +2
In a cylinder we study the boundary behavior of nonnegative solutions of second order parabolic equations of the form \[ Hu =\sum_{i,j=1}^ma_{…