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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 7182 is proven without the Axiom of Replacement ax-rep 5226, but depends on ax-un 7690, which is not required for the proof of fex 7182. (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 7705 | . . 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 6697 | . . 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 5271 | 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 3442 ⊆ wss 3903 × cxp 5630 ⟶wf 6496 |
| 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 2709 ax-sep 5243 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| 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 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-xp 5638 df-rel 5639 df-cnv 5640 df-dm 5642 df-rn 5643 df-fun 6502 df-fn 6503 df-f 6504 |
| This theorem is referenced by: elmapg 8788 f1oen2g 8917 f1dom2g 8918 dom3d 8943 domssex2 9077 domssex 9078 mapxpen 9083 oismo 9457 wdomima2g 9503 dfac8clem 9954 acni2 9968 acnlem 9970 dfac4 10044 dfac2a 10052 axdc2lem 10370 axdc4lem 10377 axcclem 10379 mpoaddex 12913 addex 12914 mpomulex 12915 mulex 12916 seqf1olem2 13977 seqf1o 13978 limsuple 15413 limsuplt 15414 limsupbnd1 15417 caucvgrlem 15608 prdsplusg 17390 prdsmulr 17391 prdsvsca 17392 prdshom 17399 gsumval 18614 frmdplusg 18791 isghm 19156 odinf 19504 staffval 20786 cnfldcj 21330 cnfldds 21333 cnfldcjOLD 21343 cnflddsOLD 21346 xrsadd 21352 xrsmul 21353 xrsds 21376 ocvfval 21633 cnpfval 23190 iscnp2 23195 fmf 23901 tsmsval 24087 blfvalps 24339 nmfval 24544 tngnm 24607 tngngp2 24608 tngngpd 24609 tngngp 24610 nmoffn 24667 nmofval 24670 ishtpy 24939 tcphex 25185 elno 27625 adjeu 31977 ismeas 34377 isismty 38052 rrnval 38078 subex 42617 absex 42618 cjex 42619 sn-isghm 43031 |
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