超凸度量空间中的重合点与极小极大原理

COINCIDENCE POINTS AND MINIMAX PRINCIPLE IN HYPERCONVEX METRIC SPACES

在超凸度量空间中,引进拟凸与拟凹概念,建立Ky Fan重合点定理,并得到极小极大原理与不动量定理。

The concept of quasi -convexity in hyperconvex metric spaces is introduced. A general coincidence theorem for set -valued mappings and the minimax principle are established in hyperconvex metric spaces.