superalgebra and (synthetic ) supergeometry Perturbative string theory is defined in terms of certain classes of 2d CFTs. Depending on which class that is, one speaks of different types of string theory. In type II string theory the CFTs in question are -supersymmetric and defined on oriented worldsheets; In heterotic string theory the CFTs in question are -supersymmetric and defined on oriented worldsheets; In … The Type II string theory referred to here is defined on spaces in Lorentzian...