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 |__  //    / _ \\   /_____//  /_   _// | || | || 
   / //    | / \ ||  `____ `    -| ||-  | '--' || 
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 /_____||   \___//   `__ `     /_____// |_|| |_|| 
 `-----`    `---`    /_//      `-----`  `-`  `-`  
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Text this: Noncovariant gauges in canonical formalism