A regular triangle is called an equilateral triangle. A regular quadrilateral is called a square. Irregular polygons are shapes that have sides and angles of different sizes. You can always ...

The algorithm integrates a cyclic reformulation with a state coordinate transformation of the cycled system to enable precise identification of LPTV dynamics. Specifically, subspace identification ...

If G is not cyclic it is necessary to rehabilitate the characters. Without them the notation is impossible; with them one can prove a number of theorems which reduce in the special case to well-known ...