38 citations · 95 across the 6 of their papers we have counts for
Showing 2015Show all
2 papers · 1 filter
math.OC2015★ 12 cited
Discrete-Time Approximations of Fliess Operators
W. Steven Gray, Luis A. Duffaut Espinosa, Kurusch Ebrahimi-Fard
A convenient way to represent a nonlinear input-output system in control theory is via a Chen-Fliess functional expansion or Fliess operator. The general goal of this paper is to d…
math.RA2015★ 8 cited
Center problem, Abel equation and the Faa di Bruno Hopf algebra for output feedback
Kurusch Ebrahimi-Fard, W. Steven Gray
A combinatorial interpretation is given of Devlin's word problem underlying the classical center-focus problem of Poincare for non-autonomous differential equations. It turns out t…