We prove that the quadratic second quantization of an operator p on L-2(R-d) boolean AND L-infinity(R-d) is an orthogonal projection on the quadratic Fock space if and only if p is a multiplication operator by a characteristic ...

The problem of controlling the nonlinear system known as the Twin-Rotor System (TRS) using the Active Disturbance Rejection Control (ADRC) technique is investigated in this work. The TRS is a commercial didactical experiment ...

Open systems acquire time-dependent coupling constants through interaction with an external field or environment. We generalize the Lewis–Riesenfeld invariant theorem to open system of quantum fields after second quantization. ...

In this work, we study the notion of differential calculus associated to an associative algebra, from its origin in manifolds geometry, to some generalizations in non commutative differential geometry. In particular, we ...

Las necesidades de apropiación tecnológica y la estructuración de misiones espaciales en el contexto colombiano traen consigo la demanda de servicios y trabajos colaborativos y especializados, para los diferentes segmentos ...