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            _____                ___     _    _   
    ___    |  ___||   ____      / _ \\  | || | || 
   /   ||  | ||__    |    \\   / //\ \\ | || | || 
  | [] ||  | ||__    | [] ||  |  ___  ||| \\_/ || 
   \__ ||  |_____||  |  __//  |_||  |_|| \____//  
    -|_||  `-----`   |_|`-`   `-`   `-`   `---`   
     `-`             `-`

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Text this: On constacyclic codes over Z 4 &amp;#x005B;v&amp;#x005D;/&amp;#x003C;v2 -v&amp;#x003E; and their Gray images

Text this: On constacyclic codes over Z 4 [v]/<v2 -v> and their Gray images