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Related theorems Unicode version |
| Description: Subclass theorem for function predicate. |
| Ref | Expression |
|---|---|
| funss |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relss 3246 |
. . . 4
| |
| 2 | funrel 3533 |
. . . 4
| |
| 3 | 1, 2 | syl5 21 |
. . 3
|
| 4 | ssel 2063 |
. . . . . . . 8
| |
| 5 | 4 | imim1d 28 |
. . . . . . 7
|
| 6 | 5 | 19.20dv 1289 |
. . . . . 6
|
| 7 | 6 | 19.22dv 1290 |
. . . . 5
|
| 8 | 7 | 19.20dv 1289 |
. . . 4
|
| 9 | dffun5 3529 |
. . . . 5
| |
| 10 | 9 | pm3.27bi 326 |
. . . 4
|
| 11 | 8, 10 | syl5 21 |
. . 3
|
| 12 | 3, 11 | jcad 600 |
. 2
|
| 13 | dffun5 3529 |
. 2
| |
| 14 | 12, 13 | syl6ibr 213 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funeq 3535 fun0 3544 funres 3551 funcnvcnv 3555 funres11 3567 fodom 4798 cmpfun 10467 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-br 2620 df-opab 2667 df-id 2835 df-rel 3185 df-cnv 3186 df-co 3187 df-fun 3192 |