The emergence of fermions and the E11 content

Understand

Claudio's warm and endearing personality adds to our admiration for his achievements in physics a sense of friendliness.

• His constant interest in fundamental questions motivated the following presentation of our attempt to understand the nature of fermions.
• This problem is an essential element of the quantum world and might be related to the quest for quantum gravity.
• We shall review how space-time fermions can emerge out of bosons in string theory and how this fact affects the extended Kac-Moody approach to the M-theory project.