Here are some notes or slides of presentations I have given in some courses, seminars, or conferences:
I will be glad to receive any comments on these notes, including informing me any mistakes in them.

---

(Presentation) Slides

• This is a presentation for the Satellite Conference on Homotopy Theory at MIT on Jan. 5, 2012.
    A Homotopy Theory of Diffeological Spaces

• This is a presentation for the Eighth Annual Graduate Student Topology and Geometry Conference in the University of Michigan at Ann Arbor on April 11, 2010.
    An Introduction to Diffeological Spaces

• This is a presentation at AMS Special Session on New Trends in Triangulated Categories and their Associated Cohomology Theories at Pennsylvania State University, USA, on October 24, 2009.
    A Brief Survey of Some Algebraic Aspects of A-infinity Algebras and Related Triangulated Structures

• This is a presentation for Algebra Seminar at the University of Western Ontario on October 24, 2008.
    Deformation and Hochschild Cohomology of A_\infty Algebras (slides)

• This is a presentation for OMC (Ottawa Mathematics Conference) on May 1, 2008.
    Deformation of A_\infty Algebras

Thesis

• This is part of an extended version of my master thesis in Zhejiang University. (Recently I found in arxiv that A. Lazarev's definition of Hochschild cohomology of an A-infinity algebra is identically the same as mine, but from a different point of view!) Last modified: August, 2008.
    Deformation and Hochschild Cohomology of A_\infty Algebras (dvi)