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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 5648 | . 2 ⊢ (𝐴 = 𝐵 → (𝐺‘𝐴) = (𝐺‘𝐵)) | |
| 2 | 1 | fveq2d 5652 | 1 ⊢ (𝐴 = 𝐵 → (𝐹‘(𝐺‘𝐴)) = (𝐹‘(𝐺‘𝐵))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ‘cfv 5333 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-rex 2517 df-v 2805 df-un 3205 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-iota 5293 df-fv 5341 |
| This theorem is referenced by: difinfsnlem 7341 ctssdclemn0 7352 cc2 7529 seq3f1olemqsum 10821 seq3f1oleml 10824 seq3f1o 10825 seq3homo 10835 seqhomog 10838 seq3coll 11152 fsumf1o 12014 iserabs 12099 explecnv 12129 cvgratnnlemnexp 12148 cvgratnnlemmn 12149 fprodf1o 12212 nninfctlemfo 12674 alginv 12682 algcvg 12683 algcvga 12686 ctiunctlemu1st 13118 ctiunctlemu2nd 13119 ctiunctlemudc 13121 ctiunctlemfo 13123 prdsbasprj 13428 prdsplusgfval 13430 prdsmulrfval 13432 prdsbas3 13433 prdsinvlem 13754 isunitd 14184 wkslem1 16244 wkslem2 16245 2wlklem 16300 eupthseg 16376 eupth2lem3fi 16400 subctctexmid 16705 |
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