發送短信 : Solvability and number of roots of bi-quadratic equations over p−adic fields

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| |  | ||  \ \\/ //  /_   _//   / _ \\   |__  //  
| |/\| ||   \ ` //   `-| |,-   / //\ \\    / //   
|  /\  ||    | ||      | ||   |  ___  ||  / //__  
|_// \_||    |_||      |_||   |_||  |_|| /_____|| 
`-`   `-`    `-`'      `-`'   `-`   `-`  `-----`