2023/05/17 by Moshe Marcus, Marcus, Moshe
Computer Science · Mathematics · #35J60 #35J75 #Advanced Mathematical Modeling in Engineering #Analysis of PDEs (math.AP) #FOS: Mathematics #Numerical methods in inverse problems #Spectral Theory in Mathematical Physics
paper · pdf · doi:10.48550/arxiv.2305.10370
openalex publication_date 2023/05/17 · openalex created_date 2023/05/20 · openalex updated_date 2026/07/28
Consider operators LV:=Δ+ V in a bounded Lipschitz domain Ω⊂ ℝN. Assume that V∈ Cα(Ω) satisfies |V(x)| ≤ a dist(x,∂Ω)-2 in Ω and that LV has a (minimal) ground state ΦV in Ω. We derive a representation formula for signed supersolutions (or subsolutions) of LVu=0 possessing an LV boundary trace. We apply this formula to the study of some questions of existence and uniqueness for an associated semilinear boundary value problem with signed measure data.