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 ______    _    _    _    _    _    _    _    _   
|      \\ | || | || | || | || | || | || | || | || 
|  --  // | || | || | || | || | || | || | || | || 
|  --  \\ | \\_/ || | \\_/ || | \\_/ || | \\_/ || 
|______//  \____//   \____//   \____//   \____//  
`------`    `---`     `---`     `---`     `---`

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Text this: Convexity, geodetic, and hull numbers of the join of graphs