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  _____      ___               __   __    _____   
 |__  //    / _ \\    ____     \ \\/ //  / ____|| 
   / //    | / \ ||  |    \\    \ ` //  / //---`' 
  / //__   | \_/ ||  | [] ||     | ||   \ \\___   
 /_____||   \___//   |  __//     |_||    \_____|| 
 `-----`    `---`    |_|`-`      `-`'     `----`  
                     `-`

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發送短信 : ON BRYANT'S PROOF OF GENERALISATIONS OF HOPF AND LIEBMANN’S THEOREM