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| Mirrors > Home > NFE Home > Th. List > df-tcfn | Unicode version | ||
| Description: Define the stratified T-raising function. (Contributed by Scott Fenton, 24-Feb-2015.) | 
| Ref | Expression | 
|---|---|
| df-tcfn | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | ctcfn 6098 | 
. 2
 | |
| 2 | vx | 
. . 3
 | |
| 3 | c1c 4135 | 
. . 3
 | |
| 4 | 2 | cv 1641 | 
. . . . 5
 | 
| 5 | 4 | cuni 3892 | 
. . . 4
 | 
| 6 | 5 | ctc 6094 | 
. . 3
 | 
| 7 | 2, 3, 6 | cmpt 5652 | 
. 2
 | 
| 8 | 1, 7 | wceq 1642 | 
1
 | 
| Colors of variables: wff setvar class | 
| This definition is referenced by: tcfnex 6245 fntcfn 6246 brtcfn 6247 | 
| Copyright terms: Public domain | W3C validator |