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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 7170 is proven without the Axiom of Replacement ax-rep 5199, but depends on ax-un 7678, which is not required for the proof of fex 7170. (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 7693 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1136 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6682 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1139 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
| 5 | 2, 4 | ssexd 5252 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1092 ∈ wcel 2119 Vcvv 3431 ⊆ wss 3883 × cxp 5616 ⟶wf 6481 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-sep 5218 ax-pow 5294 ax-pr 5362 ax-un 7678 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-xp 5624 df-rel 5625 df-cnv 5626 df-dm 5628 df-rn 5629 df-fun 6487 df-fn 6488 df-f 6489 |
| This theorem is referenced by: elmapg 8776 f1oen2g 8905 f1dom2g 8906 dom3d 8931 domssex2 9065 domssex 9066 mapxpen 9071 oismo 9445 wdomima2g 9491 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 20813 cnfldcj 21356 cnfldds 21359 xrsadd 21365 xrsmul 21366 xrsds 21385 ocvfval 21641 cnpfval 23217 iscnp2 23222 fmf 23928 tsmsval 24114 blfvalps 24366 nmfval 24571 tngnm 24634 tngngp2 24635 tngngpd 24636 tngngp 24637 nmoffn 24694 nmofval 24697 ishtpy 24957 tcphex 25202 elno 27627 adjeu 31978 ismeas 34383 isismty 38168 rrnval 38194 subex 42731 absex 42732 cjex 42733 sn-isghm 43123 |
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