Linear sets on the projective line have attracted a lot of attention because their link with blocking sets, KM-arcs and rank-metric codes. In this paper, we study linear having two points complementary weight, that is, for which sum weights equals rank set. As special case, those exactly weight greater than one, by showing new examples studying equivalence issue. Also, determine some linearized...

We study uncertain linear complementarity problems (LCPs), that is, in which the LCP vector q or matrix M may contain parameters. To this end, we use concept of Γ-robust optimization applied to gap function formulation LCP. Thus, work builds upon Krebs and Schmidt (2020). There, studied Γ-robustified LCPs for ℓ1- box-uncertainty sets, whereas now focus on ellipsoidal uncertainty sets. For M, de...

In this paper, we shall give examples to answer that an open problem posed by De Baets et al. in “Triangular norms on product lattices (Fuzzy Sets and Systems 104(1999), 61-75)”.