The Cotangent Complex of a Morphism
The Cotangent Complex of a Morphism
Introduction.Let A -> B -y C be a sequence of ring homomorphisms.(Unless otherwise noted all rings will be commutative with unit, and all modules and homomorphisms will be unitary.)Let QBM, QCM, Q.c/B denote the respective modules of Kahler differentials ( §1.1).Then one obtains easily the following exact sequence of C-modules:FlBIA …