أرسل هذا في رسالة قصيرة: Some Properties of the Exchange Operator with respect to Structured Matrices defined by Indefinite Scalar Product Spaces

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