2014/07/31 by Nicola Soave, Alessandro Zilio · 69 citations
Engineering · Mathematics · Physics and Astronomy · #Applied mathematics #Artificial intelligence #Complex system #Computer science #Lipschitz continuity #Lipschitz domain #Mathematics #Nonlinear system #Physics #Pure mathematics #Quantum chaos and dynamical systems #Quantum mechanics #Spectral Theory in Mathematical Physics #Stability and Controllability of Differential Equations #math.AP #msc:35B25 #msc:35B65 #msc:35J47 #msc:35R35 #msc:81Q05 #msc:92D25
paper · pdf · doi:10.1007/s00205-015-0867-9
published in Archive for Rational Mechanics and Analysis 218(2), 647-697 (Springer Science+Business Media) · to appear on Archive for Rational Mechanics and Analysis
arxiv created 2015/04/02 · openalex publication_date 2015/04/10 · arxiv updated 2016/10/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
For a class of systems of semi-linear elliptic equations, including -Δui=fi(x,ui) - βui∑j≠ iaijujp, i=1,…,k, for p=2 (variational-type interaction) or p = 1 (symmetric-type interaction), we prove that uniform L^∞ boundedness of the solutions implies uniform boundedness of their Lipschitz norm as β→ +∞, that is, in the limit of strong competition. This extends known quasi-optimal regularity results and covers the optimal case for this class of problems. The proof rests on monotonicity formulae of Alt-Caffarelli-Friedman and Almgren type in the variational setting and Caffarelli-Jerison-Kenig in the symmetric one.