Description: The conjugation operation of the field of real numbers. (Contributed by Thierry Arnoux, 30-Jun-2019)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | refldcj | |- * = ( *r ` RRfld ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reex | |- RR e. _V |
|
| 2 | df-refld | |- RRfld = ( CCfld |`s RR ) |
|
| 3 | cnfldcj | |- * = ( *r ` CCfld ) |
|
| 4 | 2 3 | ressstarv | |- ( RR e. _V -> * = ( *r ` RRfld ) ) |
| 5 | 1 4 | ax-mp | |- * = ( *r ` RRfld ) |