L’articolo riprende il problema della collocazione del ms. Rouen, Bibliothèque patrimoniale Villon A283, di recente scoperta, entro la tradizione Luçidario Sancho IV Castiglia. Sulla base dell’analisi vari loci critici nuovo testimone permette confermare validità dello stemma proposto in passato, quale arricchisce famiglia maggior peso; esso offre inoltre un termine paragone importante per misu...

A neighbourhood N (T) of a tour T (in the TSP with n cities) is polynomially searchable if the best among tours in N (T) can be found in time polynomialin n. Using Punnen's neighbourhoods introduced in 1996, we construct polynomially searchable neighbourhoods of exponential size satisfying the following property: for any pair of tours T 1 and T 5 , there exist tours T 2 ; T 3 and T 4 such that ...

Railway service terminals (nodes) are the places of a railway network equipped with costly technology based on high complexity technological procedures demanding a high degree of coordination and control skills. Great effort is therefore exerted to find an optimal configuration of infrastructure to extensively exploit technical and human resources and to effectively organize technological proce...

railway service terminals are the places of a railway network usually equipped with costly technology based on highly complicated technological procedures demanding a high degree of coordination and control skills. design of these systems and the organization of their operation should facilitate reaching to the required capacity together with high quality of service processes as well as minimal...

In this work spontaneous (non-dynamical) breaking (effective hiding) of the unitary quantum mechanical dynamical symmetry (superposition) is considered. It represents an especial but very interesting case of the general formalism of the spontaneous symmetry breaking (effective hiding). Conceptual analogies with spontaneous breaking of the gauge symmetry in Weinberg-Sallam’s electro-weak interac...