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

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Text this: Degree, multiplicity, and inversion formulas for rational surfaces using u-resultants