Algebraic Topology I 18.905 Fall 2018 Topics in Algebraic Topology 18.917 Spring 2018 Algebraic Topology I 18.905 Fall 2017 Seminar on Algebraic Topology 18.904 Spring 2017 Seminar on Algebraic Topology (=Kan seminar) 18.919 Fall 2016 Topics in Algebraic Topology 18.917 Spring 2016 Linear Algebra 18.700 Fall 2015 Algebraic Topology I 18.905 Fall 2015 Seminar on Algebraic Topology 18.904 Spring 2015 Algebraic Topology I 18.905 Fall 2014 Topics in Algebraic Topology 18.917 Spring 2014 Linear Algebra 18.06 Spring 2014 Algebraic Topology I 18.905 Fall 2013 On leave at the MSRI, Berkeley   Spring 2013 Algebraic Topology I 18.905 Fall 2012 Seminar on Algebraic Topology 18.904 Spring 2012 Algebraic Topology I 18.905 Fall 2011