You are invited to attend the conference Authentication Systems Based on Particular Mathematical Models. Optimal Subspaces Study for Fields Defined over NonSuperSingular Elliptic Curves, Presented by the invited speaker: Assoc. Prof. Nicolae Constantinescu, University of Craiova, Romania. The conference will be held on February 6, 2020, starting at 10:40, in room A26, Faculty of Sciences, Str. Ratio 3-5. The presentation language: Romanian or English, according to the auditorium requirements.