For a class of semilinear elliptic systems, the existence of a broader class of multibump solutions is established under considerably weaker conditions than in earlier works. The key tool is the use of variational methods.
A nondegeneracy condition for a semilinear elliptic system and the existence of multibump solutions / Montecchiari, P.; Rabinowitz, P. H.. - In: CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS. - ISSN 0944-2669. - STAMPA. - 60:4(2021). [10.1007/s00526-021-01987-7]