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Text this: Upper bound for the crossing number of Q<inf>n</inf>×K<inf>3</inf>

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

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