Metamath Proof Explorer
Definition df-1
Description: Define the complex number 1. (Contributed by NM, 22-Feb-1996)
(New usage is discouraged.)
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|
Ref |
Expression |
|
Assertion |
df-1 |
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Detailed syntax breakdown
Step |
Hyp |
Ref |
Expression |
0 |
|
c1 |
|
1 |
|
c1r |
|
2 |
|
c0r |
|
3 |
1 2
|
cop |
|
4 |
0 3
|
wceq |
|