Schemes 1: Introduction
Channel: Richard E Borcherds
Date: 2020-07-04

This lecture is part of an online course in algebraic geometry giving an introduction to schemes. It is loosely based on chapter II Hartshorne's book "Algebraic geometry". (For chapter 1 see the playlist "Algebraic geometry".)
This introductory lecture gives some motivation for schemes and gives the definition of presheaves and sheaves.