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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