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

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Text this: Harnack inequality under the change of metric