Abstract
We prove the existence of $\text{ cat } \Omega +1$ positive solutions of problem (1). If $\text{ cat } \Omega >1$ then we establish the existence of $\text{ cat } \Omega +2$ positive solutions. The proofs are based on the Lusternik-Schnirelman theory of critical points.
Citation
Daomin Cao. J. Chabrowski. "On the number of positive solutions for nonhomogeneous semilinear elliptic problem." Adv. Differential Equations 1 (5) 753 - 772, 1996. https://doi.org/10.57262/ade/1366896018
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