Theorems · Theorem · commutative algebra
two_add_two_eq_four
∀ {R : Type u_1} [inst : AddMonoidWithOne R], 2 + 2 = 4- Defined in
- Mathlib.Data.Nat.Cast.Defs
- Cited by
- 3 results in Mathlib
- Foundations
- Depth 22 from the axioms · uses propext
- Assumes
- AddMonoidWithOne
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites2
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- add_assocproof · cited by 746
- AddMonoidWithOnestatement and proof · cited by 313
Cited by3
Results whose statement or proof uses this declaration.
- four_mul_le_sq_addproof · cited by 3
- two_mul_le_add_of_sq_le_mulproof · cited by 2
- WeierstrassCurve.φ_fourproof · cited by 0