Homework of Algebraic Geometry
*In this file, I gather some classic Counterexamples in AG. It will keep updating.*
sheaf and scheme
Hartshorne: GTM52
ii.1: 1.2, 1.3, 1.7, 1.9, 1.10, 1.12, 1.14, 1.21, 1.22
Atiyah: CA
Chapter 2: direct sum.
Atlas of Spec$\mathbb{Z}[x]$