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| Mirrors > Home > ILE Home > Th. List > df-0 | Unicode version | ||
| Description: Define the complex number 0. (Contributed by NM, 22-Feb-1996.) |
| Ref | Expression |
|---|---|
| df-0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cc0 8180 |
. 2
| |
| 2 | c0r 7666 |
. . 3
| |
| 3 | 2, 2 | cop 3712 |
. 2
|
| 4 | 1, 3 | wceq 1402 |
1
|
| Colors of variables: wff set class |
| This definition is used by: pitoregt0 8217 axi2m1 8243 ax0lt1 8244 ax0id 8246 axrnegex 8247 axprecex 8248 axpre-mulgt0 8255 axcaucvglemres 8267 |
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