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Mirrors > Home > MPE Home > Th. List > fex2 | Structured version Visualization version GIF version |
Description: A function with bounded domain and range is a set. This version of fex 6966 is proven without the Axiom of Replacement. (Contributed by Mario Carneiro, 24-Jun-2015.) |
Ref | Expression |
---|---|
fex2 | ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xpexg 7453 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
2 | 1 | 3adant1 1127 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
3 | fssxp 6508 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
4 | 3 | 3ad2ant1 1130 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
5 | 2, 4 | ssexd 5192 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1084 ∈ wcel 2111 Vcvv 3441 ⊆ wss 3881 × cxp 5517 ⟶wf 6320 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-xp 5525 df-rel 5526 df-cnv 5527 df-dm 5529 df-rn 5530 df-fun 6326 df-fn 6327 df-f 6328 |
This theorem is referenced by: elmapg 8402 f1oen2g 8509 f1dom2g 8510 dom3d 8534 domssex2 8661 domssex 8662 mapxpen 8667 oismo 8988 wdomima2g 9034 ixpiunwdom 9038 dfac8clem 9443 acni2 9457 acnlem 9459 dfac4 9533 dfac2a 9540 axdc2lem 9859 axdc4lem 9866 axcclem 9868 axdclem2 9931 addex 12375 mulex 12376 seqf1olem2 13406 seqf1o 13407 limsuple 14827 limsuplt 14828 limsupbnd1 14831 caucvgrlem 15021 prdsval 16720 prdsplusg 16723 prdsmulr 16724 prdsvsca 16725 prdshom 16732 gsumval 17879 frmdplusg 18011 odinf 18682 efgtf 18840 gsumval3lem1 19018 gsumval3lem2 19019 gsumval3 19020 staffval 19611 cnfldcj 20098 cnfldds 20101 xrsadd 20108 xrsmul 20109 xrsds 20134 ocvfval 20355 cnpfval 21839 iscnp2 21844 txcn 22231 fmval 22548 fmf 22550 tsmsval 22736 tsmsadd 22752 blfvalps 22990 nmfval 23195 tngnm 23257 tngngp2 23258 tngngpd 23259 tngngp 23260 nmoffn 23317 nmofval 23320 ishtpy 23577 tcphex 23821 adjeu 29672 ismeas 31568 hgt750lemg 32035 isismty 35239 rrnval 35265 |
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