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 _____       ___     _    _     ______   _    _   
|  __ \\    / _ \\  | |  | ||  /_   _// | |  | || 
| |  \ ||  / //\ \\ | |/\| ||   -| ||-  | |/\| || 
| |__/ || |  ___  |||  /\  ||   _| ||_  |  /\  || 
|_____//  |_||  |_|||_// \_||  /_____// |_// \_|| 
 -----`   `-`   `-` `-`   `-`  `-----`  `-`   `-`

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Text this: On r-cross intersecting families of sets