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| Mirrors > Home > MPE Home > Th. List > fex2 | Structured version Visualization version GIF version | ||
| Description: A function with bounded domain and codomain is a set. This version of fex 7226 is proven without the Axiom of Replacement ax-rep 5232, but depends on ax-un 7737, which is not required for the proof of fex 7226. (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 7750 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1148 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6731 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1151 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
| 5 | 2, 4 | ssexd 5289 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 ∈ wcel 2145 Vcvv 3450 ⊆ wss 3899 × cxp 5653 ⟶wf 6529 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-sep 5251 ax-pow 5330 ax-pr 5398 ax-un 7737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-xp 5661 df-rel 5662 df-cnv 5663 df-dm 5665 df-rn 5666 df-fun 6535 df-fn 6536 df-f 6537 |
| This theorem is used by: elmapg 8839 f1oen2g 8975 f1dom2g 8976 dom3d 9001 domssex2 9136 domssex 9137 mapxpen 9142 oismo 9513 wdomima2g 9559 dfac8clem 10036 acni2 10050 acnlem 10052 dfac4 10126 dfac2a 10133 axdc2lem 10451 axdc4lem 10458 axcclem 10460 mpoaddex 13039 addex 13040 mpomulex 13041 mulex 13042 seqf1olem2 14107 seqf1o 14108 limsuple 15566 limsuplt 15567 limsupbnd1 15570 caucvgrlem 15761 prdsplusg 17544 prdsmulr 17545 prdsvsca 17546 prdshom 17553 gsumval 18780 frmdplusg 18964 isghm 19344 odinf 19691 staffval 21008 cnfldcj 21595 cnfldds 21598 xrsadd 21604 xrsmul 21605 xrsds 21624 ocvfval 21880 cnpfval 23460 iscnp2 23465 fmf 24172 tsmsval 24358 blfvalps 24610 nmfval 24815 tngnm 24878 tngngp2 24879 tngngpd 24880 tngngp 24881 nmoffn 24938 nmofval 24941 ishtpy 25201 tcphex 25446 elno 27883 adjeu 32371 ismeas 34711 isismty 38552 rrnval 38578 subex 43115 absex 43116 cjex 43117 sn-isghm 43520 |
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