> <\body> bla bla<\footnote> Sometimes, the term ensemble exclusively to denote an ``infinite set of replicas of the same system, used for statistical argumentation`` . To denote a large number of identically prepared particles, then, the term is used [ibid]. In this sense the term ``finite ensemble`` is an oxymoron. Hovewer, the term finite ensemble seems to be commonly used in other works , its denotation being that of the above-defined term assembly. We will use it in the same sense. <\initial> <\collection> <\references> <\collection> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > <\auxiliary> <\collection> <\associate|bib> Peres1993Q.Theory PhysRevLett.74.1259 PhysRevLett.80.1571