| Intuitionistic Logic Explorer | 
      
      
      < Previous  
      Next >
      
       Nearby theorems  | 
  ||
| Mirrors > Home > ILE Home > Th. List > ax-1cn | Unicode version | ||
| Description: 1 is a complex number. Axiom for real and complex numbers, justified by Theorem ax1cn 7928. (Contributed by NM, 1-Mar-1995.) | 
| Ref | Expression | 
|---|---|
| ax-1cn | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | c1 7880 | 
. 2
 | |
| 2 | cc 7877 | 
. 2
 | |
| 3 | 1, 2 | wcel 2167 | 
1
 | 
| Copyright terms: Public domain | W3C validator |