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| Mirrors > Home > ILE Home > Th. List > suppcofn | Unicode version | ||
| Description: The support of the composition of two functions is the inverse image by the inner function of the support of the outer function. (Contributed by AV, 30-May-2019.) (Revised by SN, 15-Sep-2023.) |
| Ref | Expression |
|---|---|
| suppcofn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-supp 6449 |
. . . . 5
| |
| 2 | 1 | elmpocl2 6259 |
. . . 4
|
| 3 | 2 | a1i 9 |
. . 3
|
| 4 | simprr 533 |
. . . . . . . 8
| |
| 5 | 4 | funfnd 5388 |
. . . . . . 7
|
| 6 | elpreima 5802 |
. . . . . . 7
| |
| 7 | 5, 6 | syl 14 |
. . . . . 6
|
| 8 | 7 | simplbda 384 |
. . . . 5
|
| 9 | 1 | elmpocl2 6259 |
. . . . 5
|
| 10 | 8, 9 | syl 14 |
. . . 4
|
| 11 | 10 | ex 115 |
. . 3
|
| 12 | funco 5397 |
. . . . . . . . . 10
| |
| 13 | 12 | adantl 277 |
. . . . . . . . 9
|
| 14 | 13 | funfnd 5388 |
. . . . . . . 8
|
| 15 | 14 | adantr 276 |
. . . . . . 7
|
| 16 | coexg 5312 |
. . . . . . . 8
| |
| 17 | 16 | ad2antrr 488 |
. . . . . . 7
|
| 18 | simpr 110 |
. . . . . . 7
| |
| 19 | suppimacnvfn 6459 |
. . . . . . 7
| |
| 20 | 15, 17, 18, 19 | syl3anc 1274 |
. . . . . 6
|
| 21 | cnvco 4945 |
. . . . . . . 8
| |
| 22 | 21 | imaeq1i 5103 |
. . . . . . 7
|
| 23 | 22 | a1i 9 |
. . . . . 6
|
| 24 | imaco 5273 |
. . . . . . 7
| |
| 25 | simprl 531 |
. . . . . . . . . . 11
| |
| 26 | 25 | funfnd 5388 |
. . . . . . . . . 10
|
| 27 | 26 | adantr 276 |
. . . . . . . . 9
|
| 28 | simplll 535 |
. . . . . . . . 9
| |
| 29 | suppimacnvfn 6459 |
. . . . . . . . 9
| |
| 30 | 27, 28, 18, 29 | syl3anc 1274 |
. . . . . . . 8
|
| 31 | 30 | imaeq2d 5106 |
. . . . . . 7
|
| 32 | 24, 31 | eqtr4id 2286 |
. . . . . 6
|
| 33 | 20, 23, 32 | 3eqtrd 2271 |
. . . . 5
|
| 34 | 33 | eleq2d 2304 |
. . . 4
|
| 35 | 34 | ex 115 |
. . 3
|
| 36 | 3, 11, 35 | pm5.21ndd 713 |
. 2
|
| 37 | 36 | eqrdv 2232 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-sbc 3046 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-fv 5365 df-ov 6061 df-oprab 6062 df-mpo 6063 df-supp 6449 |
| This theorem is referenced by: supp0cosupp0fn 6480 imacosuppfn 6481 fsuppcorn 7267 |
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