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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 5718 | . 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 2800 ↦ cmpt 4148 ‘cfv 5324 |
| 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 4205 ax-pow 4262 ax-pr 4297 |
| 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 2802 df-sbc 3030 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-iota 5284 df-fun 5326 df-fv 5332 |
| This theorem is referenced by: reldm 6344 rdg0 6548 oacl 6623 fvmptmap 6849 xpcomco 7005 infnninf 7317 uzval 9750 sqrtrval 11554 fsumcnv 11991 fprodcnv 12179 ege2le3 12225 bitsfval 12496 nninfctlemfo 12604 qnumval 12750 qdenval 12751 odzval 12807 pcmpt 12909 1arithlem1 12929 elply2 15452 peano4nninf 16558 peano3nninf 16559 nninfsellemeq 16566 |
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