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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 7225 is proven without the Axiom of Replacement ax-rep 5242, but depends on ax-un 7733, which is not required for the proof of fex 7225. (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 7748 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1146 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6734 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1149 | . 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 1101 ∈ wcel 2149 Vcvv 3463 ⊆ wss 3913 × cxp 5660 ⟶wf 6533 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 ax-sep 5261 ax-pow 5337 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-xp 5668 df-rel 5669 df-cnv 5670 df-dm 5672 df-rn 5673 df-fun 6539 df-fn 6540 df-f 6541 |
| This theorem is referenced by: elmapg 8835 f1oen2g 8964 f1dom2g 8965 dom3d 8990 domssex2 9124 domssex 9125 mapxpen 9130 oismo 9501 wdomima2g 9547 dfac8clem 10015 acni2 10029 acnlem 10031 dfac4 10105 dfac2a 10112 axdc2lem 10431 axdc4lem 10438 axcclem 10440 mpoaddex 13011 addex 13012 mpomulex 13013 mulex 13014 seqf1olem2 14077 seqf1o 14078 limsuple 15528 limsuplt 15529 limsupbnd1 15532 caucvgrlem 15723 prdsplusg 17510 prdsmulr 17511 prdsvsca 17512 prdshom 17519 gsumval 18734 frmdplusg 18912 isghm 19285 odinf 19632 staffval 20921 cnfldcj 21499 cnfldds 21502 xrsadd 21508 xrsmul 21509 xrsds 21528 ocvfval 21784 cnpfval 23359 iscnp2 23364 fmf 24070 tsmsval 24256 blfvalps 24508 nmfval 24713 tngnm 24776 tngngp2 24777 tngngpd 24778 tngngp 24779 nmoffn 24836 nmofval 24839 ishtpy 25099 tcphex 25344 elno 27775 adjeu 32181 ismeas 34533 isismty 38339 rrnval 38365 subex 42904 absex 42905 cjex 42906 sn-isghm 43296 |
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