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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 7172 is proven without the Axiom of Replacement ax-rep 5224, but depends on ax-un 7680, which is not required for the proof of fex 7172. (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 7695 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1130 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6689 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1133 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
| 5 | 2, 4 | ssexd 5269 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 ∈ wcel 2113 Vcvv 3440 ⊆ wss 3901 × cxp 5622 ⟶wf 6488 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-xp 5630 df-rel 5631 df-cnv 5632 df-dm 5634 df-rn 5635 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: elmapg 8776 f1oen2g 8905 f1dom2g 8906 dom3d 8931 domssex2 9065 domssex 9066 mapxpen 9071 oismo 9445 wdomima2g 9491 dfac8clem 9942 acni2 9956 acnlem 9958 dfac4 10032 dfac2a 10040 axdc2lem 10358 axdc4lem 10365 axcclem 10367 mpoaddex 12901 addex 12902 mpomulex 12903 mulex 12904 seqf1olem2 13965 seqf1o 13966 limsuple 15401 limsuplt 15402 limsupbnd1 15405 caucvgrlem 15596 prdsplusg 17378 prdsmulr 17379 prdsvsca 17380 prdshom 17387 gsumval 18602 frmdplusg 18779 isghm 19144 odinf 19492 staffval 20774 cnfldcj 21318 cnfldds 21321 cnfldcjOLD 21331 cnflddsOLD 21334 xrsadd 21340 xrsmul 21341 xrsds 21364 ocvfval 21621 cnpfval 23178 iscnp2 23183 fmf 23889 tsmsval 24075 blfvalps 24327 nmfval 24532 tngnm 24595 tngngp2 24596 tngngpd 24597 tngngp 24598 nmoffn 24655 nmofval 24658 ishtpy 24927 tcphex 25173 elno 27613 adjeu 31964 ismeas 34356 isismty 38002 rrnval 38028 subex 42502 absex 42503 cjex 42504 sn-isghm 42916 |
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