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

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發送短信 : On commutative Noetherian rings which have the s.p.a.r. property