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

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