This Lesson is now open for you as composed by two parts (ca. 30 min each). 

You may either watch in streaming or download mp4 files. 

A chat on this site will be opened for you to answer your questions. Unfortunately, I can not open it at 11, since the vice-Rector Prof. Vercelli asked us to perticipate in a videoconference concerning an important project on Artificial Intelligence.  The chat will be open from 2pm to 3 pm.