We compare the restriction to the context of weak Hopf algebras of the notion of crossed product with a Hopf algebroid introduced in [Cleft extensions of Hopf algebroids, Appl. Categor. Struct.14(5–6) (2006) 431–469] with ...

In this paper we study the theory of cleft extensions for a weak bialgebra H. Among other results, we determine when two unitary crossed products of an algebra A by H are equivalent and we prove that if H is a weak Hopf ...

Acute muscle weakness (AMW) is a pediatric emergency. During diagnostic approach, it is crucial to obtain a detailed anamnesis, including: onset of weakness, history of associated febrile states, ingestion of toxic ...

In this work an optomechanical system inside a Mach-Zehnder interferometer is studied from the perspective of the weak value amplification effect. The optomechanical system consists of a Fabry-Pérot cavity with a moving ...