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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 7224 is proven without the Axiom of Replacement ax-rep 5238, but depends on ax-un 7732, which is not required for the proof of fex 7224. (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 7745 | . . 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 6733 | . . 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 5295 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1103 ∈ wcel 2143 Vcvv 3455 ⊆ wss 3905 × cxp 5659 ⟶wf 6532 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5257 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-opab 5174 df-xp 5667 df-rel 5668 df-cnv 5669 df-dm 5671 df-rn 5672 df-fun 6538 df-fn 6539 df-f 6540 |
| This theorem is referenced by: elmapg 8832 f1oen2g 8961 f1dom2g 8962 dom3d 8987 domssex2 9121 domssex 9122 mapxpen 9127 oismo 9498 wdomima2g 9544 dfac8clem 10012 acni2 10026 acnlem 10028 dfac4 10102 dfac2a 10109 axdc2lem 10427 axdc4lem 10434 axcclem 10436 mpoaddex 13007 addex 13008 mpomulex 13009 mulex 13010 seqf1olem2 14074 seqf1o 14075 limsuple 15525 limsuplt 15526 limsupbnd1 15529 caucvgrlem 15720 prdsplusg 17506 prdsmulr 17507 prdsvsca 17508 prdshom 17515 gsumval 18730 frmdplusg 18908 isghm 19281 odinf 19628 staffval 20944 cnfldcj 21531 cnfldds 21534 xrsadd 21540 xrsmul 21541 xrsds 21560 ocvfval 21816 cnpfval 23391 iscnp2 23396 fmf 24102 tsmsval 24288 blfvalps 24540 nmfval 24745 tngnm 24808 tngngp2 24809 tngngpd 24810 tngngp 24811 nmoffn 24868 nmofval 24871 ishtpy 25131 tcphex 25376 elno 27810 adjeu 32241 ismeas 34589 isismty 38452 rrnval 38478 subex 43015 absex 43016 cjex 43017 sn-isghm 43405 |
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