NOTE ON THE RESULTS WITH LOWER SEMI-CONTINUITY

Yuqing Chen, Yeol-Je Cho, Li Yang
2002 Bulletin of the Korean Mathematical Society  
In this paper, we introduce the concept of lower semicontinuous from above functions and show that many well-known results, such as Ekland's and Caristi's theorems, remain also true under lower semi-continuous from above functions.
doi:10.4134/bkms.2002.39.4.535 fatcat:g337zsc3f5eftc7jvymhjtg77q