A Hopf's lemma and a strong minimum principle for the fractional p-Laplacian

Our propose here is to provide a Hopf lemma and a strong minimum principle for weak supersolutions of(−Δp)su=c(x)|u|p−2u in Ω where Ω is an open set of RN, s∈(0,1), p∈(1,+∞), c∈C(Ω‾) and (−Δp)s is the fractional p-Laplacian.