أرسل هذا في رسالة قصيرة: Mappings of the finite and infinite zero structures and invertibility structures of general linear multivariable systems under the bilinear transformation

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 | \| ||  /_   _//  | \| ||  \ \\/ //  /_   _// 
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 | .  ||   _| ||_   | .  ||    | ||     _| ||   
 |_|\_||  /_____//  |_|\_||    |_||    /__//    
 `-` -`   `-----`   `-` -`     `-`'    `--`