Describir: Computability and unsolvability

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