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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 5639 | . 2 ⊢ (𝐴 = 𝐵 → (𝐺‘𝐴) = (𝐺‘𝐵)) | |
| 2 | 1 | fveq2d 5643 | 1 ⊢ (𝐴 = 𝐵 → (𝐹‘(𝐺‘𝐴)) = (𝐹‘(𝐺‘𝐵))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ‘cfv 5326 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rex 2516 df-v 2804 df-un 3204 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-iota 5286 df-fv 5334 |
| This theorem is referenced by: difinfsnlem 7297 ctssdclemn0 7308 cc2 7485 seq3f1olemqsum 10774 seq3f1oleml 10777 seq3f1o 10778 seq3homo 10788 seqhomog 10791 seq3coll 11105 fsumf1o 11950 iserabs 12035 explecnv 12065 cvgratnnlemnexp 12084 cvgratnnlemmn 12085 fprodf1o 12148 nninfctlemfo 12610 alginv 12618 algcvg 12619 algcvga 12622 ctiunctlemu1st 13054 ctiunctlemu2nd 13055 ctiunctlemudc 13057 ctiunctlemfo 13059 prdsbasprj 13364 prdsplusgfval 13366 prdsmulrfval 13368 prdsbas3 13369 prdsinvlem 13690 isunitd 14119 wkslem1 16170 wkslem2 16171 2wlklem 16226 eupthseg 16302 subctctexmid 16601 |
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