| New Foundations Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > NFE Home > Th. List > df-ranfn | Unicode version | ||
| Description: Define the range function. This is a function wrapper for the range operator. (Contributed by Scott Fenton, 9-Aug-2019.) |
| Ref | Expression |
|---|---|
| df-ranfn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cranfn 5772 |
. 2
| |
| 2 | vx |
. . 3
| |
| 3 | cvv 2860 |
. . 3
| |
| 4 | 2 | cv 1641 |
. . . 4
|
| 5 | 4 | crn 4774 |
. . 3
|
| 6 | 2, 3, 5 | cmpt 5652 |
. 2
|
| 7 | 1, 6 | wceq 1642 |
1
|
| Colors of variables: wff setvar class |
| This definition is referenced by: fvranfn 5870 ranfnex 5872 |
| Copyright terms: Public domain | W3C validator |