Martin-Lof type theory is both an important and practical formalization and a focus for a charismatic view of the foundations of mathematics. This volume celebr... » 

Martin-Lof type theory is both an important and practical formalization and a focus for a charismatic view of the foundations of mathematics. This volume celebrates the 25th anniversary of the birth of the subject, and is a record of areas of activity and the early development of the subject. «