AlgebraicCurves.Cohomology.Cech.Proofs.ProjSpaceCech_Twist_d_sq.ProjSpaceCech.Twist.d_sq
Source context 11 commands
Surrounding namespaces, section variables, and local commands at this declaration.
section ProofImplementation
namespace AlgebraicCurves.Cohomology.Cech.Proofs.ProjSpaceCech_Twist_d_sq
universe u
noncomputable section
open Finset Function
namespace ProjSpaceCech
open _root_.ProjSpaceCech
open _root_.ProjSpaceCech
section AltCech
variable (R : Type u) [CommRing R] (n : ℕ) (d : ℤ)
open scoped _root_.ProjSpaceCech.Twist inLean source · statement
theorem Twist.d_sq (i : ℕ) :
Twist.d R n d (i + 1) ∘ₗ Twist.d R n d i = 0