On Sun, 14 Oct 2018, Sven Schreiber wrote: > Am 14.10.2018 um 11:34 schrieb Artur T.: >> >> Hi Jack, without having checked whether this is intended but the first >> entry in the PwrSet string array is empty. > > Indeed I think conceptually the empty element must indeed be in the set of > all permutations. (Or at least there is such a convention.)
Exactly! ------------------------------------------------------- Riccardo (Jack) Lucchetti Dipartimento di Scienze Economiche e Sociali (DiSES) Università Politecnica delle Marche (formerly known as Università di Ancona) r.lucchetti(a)univpm.it http://www2.econ.univpm.it/servizi/hpp/lucchetti -------------------------------------------------------
