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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 7896 |
. 2
 | |
| 2 | c0r 7382 |
. . 3
| |
| 3 | 2, 2 | cop 3626 |
. 2
|
| 4 | 1, 3 | wceq 1364 |
1
 |
| Colors of variables: wff set class |
| This definition is referenced by: pitoregt0 7933 axi2m1 7959 ax0lt1 7960 ax0id 7962 axrnegex 7963 axprecex 7964 axpre-mulgt0 7971 axcaucvglemres 7983 |
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