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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 5717 | . 2 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝐴 ∈ 𝑊) → (𝐹‘𝐴) ∈ V) | |
| 4 | 1, 2, 3 | mp2an 430 | 1 ⊢ (𝐹‘𝐴) ∈ V |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 Vcvv 2821 ‘cfv 5380 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-cnv 4784 df-dm 4786 df-rn 4787 df-iota 5340 df-fv 5388 |
| This theorem is used by: uchoice 6375 rdgtfr 6649 rdgruledefgg 6650 mapsnf1o2 6983 ixpiinm 7011 mapsnen 7105 xpdom2 7134 mapxpen 7153 xpmapenlem 7154 phplem4 7161 ac6sfi 7207 fiintim 7243 pr2cv1 7548 acfun 7570 ccfunen 7637 ioof 10391 frec2uzrand 10864 frec2uzf1od 10865 frecfzennn 10885 hashinfom 11240 fsum3 12180 ballotfilem7 13338 slotslfn 13437 ptex 13678 prdsvallem 13681 prdsval 14281 znval 15081 elply2 15973 depindlem1 16964 |
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