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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 5600 | . 2 ⊢ (𝐴 = 𝐵 → (𝐺‘𝐴) = (𝐺‘𝐵)) | |
| 2 | 1 | fveq2d 5604 | 1 ⊢ (𝐴 = 𝐵 → (𝐹‘(𝐺‘𝐴)) = (𝐹‘(𝐺‘𝐵))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1373 ‘cfv 5291 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2189 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-rex 2492 df-v 2779 df-un 3179 df-sn 3650 df-pr 3651 df-op 3653 df-uni 3866 df-br 4061 df-iota 5252 df-fv 5299 |
| This theorem is referenced by: difinfsnlem 7229 ctssdclemn0 7240 cc2 7416 seq3f1olemqsum 10697 seq3f1oleml 10700 seq3f1o 10701 seq3homo 10711 seqhomog 10714 seq3coll 11026 fsumf1o 11862 iserabs 11947 explecnv 11977 cvgratnnlemnexp 11996 cvgratnnlemmn 11997 fprodf1o 12060 nninfctlemfo 12522 alginv 12530 algcvg 12531 algcvga 12534 ctiunctlemu1st 12966 ctiunctlemu2nd 12967 ctiunctlemudc 12969 ctiunctlemfo 12971 prdsbasprj 13275 prdsplusgfval 13277 prdsmulrfval 13279 prdsbas3 13280 prdsinvlem 13601 isunitd 14029 subctctexmid 16247 |
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