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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 6394 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 6858 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
2 | 1 | 3adant1 1072 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
3 | fssxp 5973 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
4 | 3 | 3ad2ant1 1075 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
5 | 2, 4 | ssexd 4733 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1031 ∈ wcel 1977 Vcvv 3173 ⊆ wss 3540 × cxp 5036 ⟶wf 5800 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-xp 5044 df-rel 5045 df-cnv 5046 df-dm 5048 df-rn 5049 df-fun 5806 df-fn 5807 df-f 5808 |
This theorem is referenced by: elmapg 7757 f1oen2g 7858 f1dom2g 7859 dom3d 7883 domssex2 8005 domssex 8006 mapxpen 8011 oismo 8328 wdomima2g 8374 ixpiunwdom 8379 dfac8clem 8738 ac5num 8742 acni2 8752 acnlem 8754 dfac4 8828 dfac2a 8835 axdc2lem 9153 axdc4lem 9160 axcclem 9162 ac6num 9184 axdclem2 9225 addex 11706 mulex 11707 seqf1olem2 12703 seqf1o 12704 hasheqf1oiOLD 13003 limsuple 14057 limsuplt 14058 limsupbnd1 14061 caucvgrlem 14251 prdsval 15938 prdsplusg 15941 prdsmulr 15942 prdsvsca 15943 prdsds 15947 prdshom 15950 plusffval 17070 gsumval 17094 frmdplusg 17214 vrmdfval 17216 odinf 17803 efgtf 17958 gsumval3lem1 18129 gsumval3lem2 18130 gsumval3 18131 staffval 18670 scaffval 18704 cnfldcj 19574 cnfldds 19577 xrsadd 19582 xrsmul 19583 xrsds 19608 ipffval 19812 ocvfval 19829 cnpfval 20848 iscnp2 20853 txcn 21239 fmval 21557 fmf 21559 tsmsval 21744 tsmsadd 21760 blfvalps 21998 nmfval 22203 tngnm 22265 tngngp2 22266 tngngpd 22267 tngngp 22268 nmoffn 22325 nmofval 22328 ishtpy 22579 tchex 22824 adjeu 28132 ismeas 29589 isismty 32770 rrnval 32796 |
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