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

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Text this: Littlewood-Paley type inequality on ℝ