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| Mirrors > Home > ILE Home > Th. List > fvmpt | GIF version | ||
| Description: Value of a function given in maps-to notation. (Contributed by NM, 17-Aug-2011.) |
| Ref | Expression |
|---|---|
| fvmptg.1 | ⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶) |
| fvmptg.2 | ⊢ 𝐹 = (𝑥 ∈ 𝐷 ↦ 𝐵) |
| fvmpt.3 | ⊢ 𝐶 ∈ V |
| Ref | Expression |
|---|---|
| fvmpt | ⊢ (𝐴 ∈ 𝐷 → (𝐹‘𝐴) = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvmpt.3 | . 2 ⊢ 𝐶 ∈ V | |
| 2 | fvmptg.1 | . . 3 ⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶) | |
| 3 | fvmptg.2 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐷 ↦ 𝐵) | |
| 4 | 2, 3 | fvmptg 5715 | . 2 ⊢ ((𝐴 ∈ 𝐷 ∧ 𝐶 ∈ V) → (𝐹‘𝐴) = 𝐶) |
| 5 | 1, 4 | mpan2 425 | 1 ⊢ (𝐴 ∈ 𝐷 → (𝐹‘𝐴) = 𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 Vcvv 2799 ↦ cmpt 4145 ‘cfv 5321 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-sbc 3029 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4385 df-xp 4726 df-rel 4727 df-cnv 4728 df-co 4729 df-dm 4730 df-iota 5281 df-fun 5323 df-fv 5329 |
| This theorem is referenced by: reldm 6341 rdg0 6544 oacl 6619 fvmptmap 6845 xpcomco 6998 infnninf 7307 uzval 9740 sqrtrval 11532 fsumcnv 11969 fprodcnv 12157 ege2le3 12203 bitsfval 12474 nninfctlemfo 12582 qnumval 12728 qdenval 12729 odzval 12785 pcmpt 12887 1arithlem1 12907 elply2 15430 peano4nninf 16486 peano3nninf 16487 nninfsellemeq 16494 |
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