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| Mirrors > Home > ILE Home > Th. List > 1cnd | Unicode version | ||
| Description: 1 is a complex number, deductive form (common case). (Contributed by David A. Wheeler, 6-Dec-2018.) | 
| Ref | Expression | 
|---|---|
| 1cnd | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | ax-1cn 7972 | 
. 2
 | |
| 2 | 1 | a1i 9 | 
1
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