發送短信 : Endpoints of multivalued nonexpansive mappings in geodesic spaces

 _    _     ______   _    _      ___       _____  
| \  / ||  /_   _// | || | ||   / _ \\    / ___// 
|  \/  ||   -| ||-  | || | ||  / //\ \\   \___ \\ 
| .  . ||   _| ||_  | \\_/ || |  ___  ||  /    // 
|_|\/|_||  /_____//  \____//  |_||  |_|| /____//  
`-`  `-`   `-----`    `---`   `-`   `-` `-----`