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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 7174 is proven without the Axiom of Replacement ax-rep 5212, but depends on ax-un 7682, which is not required for the proof of fex 7174. (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 7697 | . . 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 6689 | . . 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 5261 | 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 3430 ⊆ wss 3890 × cxp 5622 ⟶wf 6488 |
| 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 5231 ax-pow 5302 ax-pr 5370 ax-un 7682 |
| 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 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 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 8779 f1oen2g 8908 f1dom2g 8909 dom3d 8934 domssex2 9068 domssex 9069 mapxpen 9074 oismo 9448 wdomima2g 9494 dfac8clem 9945 acni2 9959 acnlem 9961 dfac4 10035 dfac2a 10043 axdc2lem 10361 axdc4lem 10368 axcclem 10370 mpoaddex 12929 addex 12930 mpomulex 12931 mulex 12932 seqf1olem2 13995 seqf1o 13996 limsuple 15431 limsuplt 15432 limsupbnd1 15435 caucvgrlem 15626 prdsplusg 17412 prdsmulr 17413 prdsvsca 17414 prdshom 17421 gsumval 18636 frmdplusg 18813 isghm 19181 odinf 19529 staffval 20809 cnfldcj 21353 cnfldds 21356 cnfldcjOLD 21366 cnflddsOLD 21369 xrsadd 21375 xrsmul 21376 xrsds 21399 ocvfval 21656 cnpfval 23209 iscnp2 23214 fmf 23920 tsmsval 24106 blfvalps 24358 nmfval 24563 tngnm 24626 tngngp2 24627 tngngpd 24628 tngngp 24629 nmoffn 24686 nmofval 24689 ishtpy 24949 tcphex 25194 elno 27623 adjeu 31975 ismeas 34359 isismty 38136 rrnval 38162 subex 42700 absex 42701 cjex 42702 sn-isghm 43120 |
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