An Introduction to Diffeology
September 1, 2016, update  August 25, 2017
This is the text that will be published in the proceedings of the Conference on “New Spaces in Mathematics and in Physics” that held in IHP Paris Sept. 28 – Oct. 2, 2015. I tried to give in a few pages a survey on what diffeology is about and what we can do or say with or about it.

To be published as a chapter in the Collective tome on New Spaces in Mathematics & Physics.