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math.FA2019★ 4 cited
The numerical range of a class of periodic tridiagonal operators
Benjamín A. Itzá-Ortiz, Rubén A. Martínez-Avendaño
In this paper we compute the closure of the numerical range of certain periodic tridiagonal operators. This is achieved by showing that the closure of the numerical range of such o…
math.OC2019★ 2 cited
Conditions for stable equilibrium in Cournot duopoly models with tax evasion and time delay
Raul Villafuerte-Segura, Eduardo Alvarado-Santos, Benjamin A. Itza-Ortiz
We provide conditions for stable equilibrium in Cournot duopoly models with tax evasion and time delay. We prove that our conditions actually imply asymptotically stable equilibriu…