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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 5758 | . 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 1398 ∈ wcel 2205 Vcvv 2815 ↦ cmpt 4176 ‘cfv 5357 |
| 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-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-sbc 3046 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-iota 5317 df-fun 5359 df-fv 5365 |
| This theorem is referenced by: reldm 6393 rdg0 6631 oacl 6706 fvmptmap 6932 xpcomco 7090 infnninf 7428 uzval 9876 sqrtrval 11713 fsumcnv 12151 fprodcnv 12339 ege2le3 12385 bitsfval 12656 nninfctlemfo 12764 qnumval 12910 qdenval 12911 odzval 12967 pcmpt 13069 1arithlem1 13089 ballotfilem2 13175 ballotfilemfval 13176 ballotfilemi 13190 ballotfilemsval 13199 ballotfilemth 13228 elply2 15729 peano4nninf 16923 peano3nninf 16924 nninfsellemeq 16931 |
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