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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 7181 is proven without the Axiom of Replacement ax-rep 5212, but depends on ax-un 7689, which is not required for the proof of fex 7181. (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 7704 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1131 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6695 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1134 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
| 5 | 2, 4 | ssexd 5265 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1087 ∈ wcel 2114 Vcvv 3429 ⊆ wss 3889 × cxp 5629 ⟶wf 6494 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2708 ax-sep 5231 ax-pow 5307 ax-pr 5375 ax-un 7689 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-xp 5637 df-rel 5638 df-cnv 5639 df-dm 5641 df-rn 5642 df-fun 6500 df-fn 6501 df-f 6502 |
| This theorem is referenced by: elmapg 8786 f1oen2g 8915 f1dom2g 8916 dom3d 8941 domssex2 9075 domssex 9076 mapxpen 9081 oismo 9455 wdomima2g 9501 dfac8clem 9954 acni2 9968 acnlem 9970 dfac4 10044 dfac2a 10052 axdc2lem 10370 axdc4lem 10377 axcclem 10379 mpoaddex 12938 addex 12939 mpomulex 12940 mulex 12941 seqf1olem2 14004 seqf1o 14005 limsuple 15440 limsuplt 15441 limsupbnd1 15444 caucvgrlem 15635 prdsplusg 17421 prdsmulr 17422 prdsvsca 17423 prdshom 17430 gsumval 18645 frmdplusg 18822 isghm 19190 odinf 19538 staffval 20818 cnfldcj 21361 cnfldds 21364 xrsadd 21370 xrsmul 21371 xrsds 21390 ocvfval 21646 cnpfval 23199 iscnp2 23204 fmf 23910 tsmsval 24096 blfvalps 24348 nmfval 24553 tngnm 24616 tngngp2 24617 tngngpd 24618 tngngp 24619 nmoffn 24676 nmofval 24679 ishtpy 24939 tcphex 25184 elno 27609 adjeu 31960 ismeas 34343 isismty 38122 rrnval 38148 subex 42686 absex 42687 cjex 42688 sn-isghm 43106 |
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