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| Mirrors > Home > ILE Home > Th. List > 2fveq3 | GIF version | ||
| Description: Equality theorem for nested function values. (Contributed by AV, 14-Aug-2022.) |
| Ref | Expression |
|---|---|
| 2fveq3 | ⊢ (𝐴 = 𝐵 → (𝐹‘(𝐺‘𝐴)) = (𝐹‘(𝐺‘𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 5670 | . 2 ⊢ (𝐴 = 𝐵 → (𝐺‘𝐴) = (𝐺‘𝐵)) | |
| 2 | 1 | fveq2d 5674 | 1 ⊢ (𝐴 = 𝐵 → (𝐹‘(𝐺‘𝐴)) = (𝐹‘(𝐺‘𝐵))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ‘cfv 5352 |
| 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-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-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-rex 2526 df-v 2815 df-un 3215 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-br 4110 df-iota 5312 df-fv 5360 |
| This theorem is referenced by: difinfsnlem 7390 ctssdclemn0 7401 cc2 7581 seq3f1olemqsum 10875 seq3f1oleml 10878 seq3f1o 10879 seq3homo 10889 seqhomog 10892 seq3coll 11214 fsumf1o 12076 iserabs 12161 explecnv 12191 cvgratnnlemnexp 12210 cvgratnnlemmn 12211 fprodf1o 12274 nninfctlemfo 12736 alginv 12744 algcvg 12745 algcvga 12748 ctiunctlemu1st 13185 ctiunctlemu2nd 13186 ctiunctlemudc 13188 ctiunctlemfo 13190 prdsbasprj 13495 prdsplusgfval 13497 prdsmulrfval 13499 prdsbas3 13500 prdsinvlem 13821 isunitd 14251 wkslem1 16315 wkslem2 16316 2wlklem 16371 eupthseg 16447 eupth2lem3fi 16471 subctctexmid 16774 |
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