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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 6991 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 7475 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
2 | 1 | 3adant1 1126 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
3 | fssxp 6536 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
4 | 3 | 3ad2ant1 1129 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
5 | 2, 4 | ssexd 5230 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1083 ∈ wcel 2114 Vcvv 3496 ⊆ wss 3938 × cxp 5555 ⟶wf 6353 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ral 3145 df-rex 3146 df-rab 3149 df-v 3498 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-xp 5563 df-rel 5564 df-cnv 5565 df-dm 5567 df-rn 5568 df-fun 6359 df-fn 6360 df-f 6361 |
This theorem is referenced by: elmapg 8421 f1oen2g 8528 f1dom2g 8529 dom3d 8553 domssex2 8679 domssex 8680 mapxpen 8685 oismo 9006 wdomima2g 9052 ixpiunwdom 9057 dfac8clem 9460 acni2 9474 acnlem 9476 dfac4 9550 dfac2a 9557 axdc2lem 9872 axdc4lem 9879 axcclem 9881 axdclem2 9944 addex 12390 mulex 12391 seqf1olem2 13413 seqf1o 13414 limsuple 14837 limsuplt 14838 limsupbnd1 14841 caucvgrlem 15031 prdsval 16730 prdsplusg 16733 prdsmulr 16734 prdsvsca 16735 prdsds 16739 prdshom 16742 gsumval 17889 frmdplusg 18021 odinf 18692 efgtf 18850 gsumval3lem1 19027 gsumval3lem2 19028 gsumval3 19029 staffval 19620 cnfldcj 20554 cnfldds 20557 xrsadd 20564 xrsmul 20565 xrsds 20590 ocvfval 20812 cnpfval 21844 iscnp2 21849 txcn 22236 fmval 22553 fmf 22555 tsmsval 22741 tsmsadd 22757 blfvalps 22995 nmfval 23200 tngnm 23262 tngngp2 23263 tngngpd 23264 tngngp 23265 nmoffn 23322 nmofval 23325 ishtpy 23578 tcphex 23822 adjeu 29668 ismeas 31460 hgt750lemg 31927 isismty 35081 rrnval 35107 |
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