Metamath Proof Explorer


Definition df-0

Description: Define the complex number 0. (Contributed by NM, 22-Feb-1996) (New usage is discouraged.)

Ref Expression
Assertion df-0 0=0𝑹0𝑹

Detailed syntax breakdown

Step Hyp Ref Expression
0 cc0 class0
1 c0r class0𝑹
2 1 1 cop class0𝑹0𝑹
3 0 2 wceq wff0=0𝑹0𝑹