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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 6490 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 6960 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
2 | 1 | 3adant1 1079 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
3 | fssxp 6060 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
4 | 3 | 3ad2ant1 1082 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
5 | 2, 4 | ssexd 4805 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1037 ∈ wcel 1990 Vcvv 3200 ⊆ wss 3574 × cxp 5112 ⟶wf 5884 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-xp 5120 df-rel 5121 df-cnv 5122 df-dm 5124 df-rn 5125 df-fun 5890 df-fn 5891 df-f 5892 |
This theorem is referenced by: elmapg 7870 f1oen2g 7972 f1dom2g 7973 dom3d 7997 domssex2 8120 domssex 8121 mapxpen 8126 oismo 8445 wdomima2g 8491 ixpiunwdom 8496 dfac8clem 8855 ac5num 8859 acni2 8869 acnlem 8871 dfac4 8945 dfac2a 8952 axdc2lem 9270 axdc4lem 9277 axcclem 9279 ac6num 9301 axdclem2 9342 addex 11830 mulex 11831 seqf1olem2 12841 seqf1o 12842 hasheqf1oiOLD 13141 limsuple 14209 limsuplt 14210 limsupbnd1 14213 caucvgrlem 14403 prdsval 16115 prdsplusg 16118 prdsmulr 16119 prdsvsca 16120 prdsds 16124 prdshom 16127 plusffval 17247 gsumval 17271 frmdplusg 17391 vrmdfval 17393 odinf 17980 efgtf 18135 gsumval3lem1 18306 gsumval3lem2 18307 gsumval3 18308 staffval 18847 scaffval 18881 cnfldcj 19753 cnfldds 19756 xrsadd 19763 xrsmul 19764 xrsds 19789 ipffval 19993 ocvfval 20010 cnpfval 21038 iscnp2 21043 txcn 21429 fmval 21747 fmf 21749 tsmsval 21934 tsmsadd 21950 blfvalps 22188 nmfval 22393 tngnm 22455 tngngp2 22456 tngngpd 22457 tngngp 22458 nmoffn 22515 nmofval 22518 ishtpy 22771 tchex 23016 adjeu 28748 ismeas 30262 hgt750lemg 30732 isismty 33600 rrnval 33626 |
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