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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 6992 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 7476 | . . 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 6537 | . . 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 5231 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1083 ∈ wcel 2113 Vcvv 3497 ⊆ wss 3939 × cxp 5556 ⟶wf 6354 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ral 3146 df-rex 3147 df-rab 3150 df-v 3499 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-op 4577 df-uni 4842 df-br 5070 df-opab 5132 df-xp 5564 df-rel 5565 df-cnv 5566 df-dm 5568 df-rn 5569 df-fun 6360 df-fn 6361 df-f 6362 |
This theorem is referenced by: elmapg 8422 f1oen2g 8529 f1dom2g 8530 dom3d 8554 domssex2 8680 domssex 8681 mapxpen 8686 oismo 9007 wdomima2g 9053 ixpiunwdom 9058 dfac8clem 9461 acni2 9475 acnlem 9477 dfac4 9551 dfac2a 9558 axdc2lem 9873 axdc4lem 9880 axcclem 9882 axdclem2 9945 addex 12390 mulex 12391 seqf1olem2 13413 seqf1o 13414 limsuple 14838 limsuplt 14839 limsupbnd1 14842 caucvgrlem 15032 prdsval 16731 prdsplusg 16734 prdsmulr 16735 prdsvsca 16736 prdsds 16740 prdshom 16743 gsumval 17890 frmdplusg 18022 odinf 18693 efgtf 18851 gsumval3lem1 19028 gsumval3lem2 19029 gsumval3 19030 staffval 19621 cnfldcj 20555 cnfldds 20558 xrsadd 20565 xrsmul 20566 xrsds 20591 ocvfval 20813 cnpfval 21845 iscnp2 21850 txcn 22237 fmval 22554 fmf 22556 tsmsval 22742 tsmsadd 22758 blfvalps 22996 nmfval 23201 tngnm 23263 tngngp2 23264 tngngpd 23265 tngngp 23266 nmoffn 23323 nmofval 23326 ishtpy 23579 tcphex 23823 adjeu 29669 ismeas 31462 hgt750lemg 31929 isismty 35083 rrnval 35109 |
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