Rational approximation of a class of infinite-dimensional systems II: Optimal convergence rates ofL ∞ approximants

1991 ◽  
Vol 4 (3) ◽  
pp. 233-246 ◽  
Author(s):  
K. Glover ◽  
J. Lam ◽  
J. R. Partington
2019 ◽  
Vol 19 (2) ◽  
pp. 341-357
Author(s):  
Ronghong Fan ◽  
Yanru Liu ◽  
Shuo Zhang

AbstractIn this paper, stable mixed formulations are designed and analyzed for the quad div problems under two frameworks presented in [23] and [22], respectively. Analogue discretizations are given with respect to the mixed formulation, and optimal convergence rates are observed, which confirm the theoretical analysis.


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