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

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