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Mirrors > Home > ILE Home > Th. List > fvex | GIF version |
Description: Evaluating a set function at a set exists. (Contributed by Mario Carneiro and Jim Kingdon, 28-May-2019.) |
Ref | Expression |
---|---|
fvex.1 | ⊢ 𝐹 ∈ 𝑉 |
fvex.2 | ⊢ 𝐴 ∈ 𝑊 |
Ref | Expression |
---|---|
fvex | ⊢ (𝐹‘𝐴) ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fvex.1 | . 2 ⊢ 𝐹 ∈ 𝑉 | |
2 | fvex.2 | . 2 ⊢ 𝐴 ∈ 𝑊 | |
3 | fvexg 5499 | . 2 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝐹‘𝐴) ∈ V) | |
4 | 1, 2, 3 | mp2an 423 | 1 ⊢ (𝐹‘𝐴) ∈ V |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2135 Vcvv 2721 ‘cfv 5182 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-13 2137 ax-14 2138 ax-ext 2146 ax-sep 4094 ax-pow 4147 ax-pr 4181 ax-un 4405 |
This theorem depends on definitions: df-bi 116 df-3an 969 df-tru 1345 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ral 2447 df-rex 2448 df-v 2723 df-un 3115 df-in 3117 df-ss 3124 df-pw 3555 df-sn 3576 df-pr 3577 df-op 3579 df-uni 3784 df-br 3977 df-opab 4038 df-cnv 4606 df-dm 4608 df-rn 4609 df-iota 5147 df-fv 5190 |
This theorem is referenced by: rdgtfr 6333 rdgruledefgg 6334 mapsnf1o2 6653 ixpiinm 6681 mapsnen 6768 xpdom2 6788 mapxpen 6805 xpmapenlem 6806 phplem4 6812 ac6sfi 6855 fiintim 6885 acfun 7154 ccfunen 7196 ioof 9898 frec2uzrand 10330 frec2uzf1od 10331 frecfzennn 10351 hashinfom 10680 fsum3 11314 slotslfn 12357 |
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