The Contributions of Prof. Roberto Tiberio to the Incremental Theory of Diffraction for Electromagnetic

In this paper a brief overview of the incremental theory of diffraction has been presented, of which Prof. Tiberio was the principal author and the main source of inspiration of our contributions. This activity covers only a very small part of his overall significant research contributions in high-frequency electromagnetic, to which he has indefatigably dedicated until he passed away. However, in this short paper, it has not been possible to describe also the excellent human qualities of Roberto. He was a unique individual and we also know we will all keep his memory alive