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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 7175 is proven without the Axiom of Replacement ax-rep 5213, but depends on ax-un 7683, which is not required for the proof of fex 7175. (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 7698 | . . 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 6690 | . . 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 5262 | 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 5623 ⟶wf 6489 |
| 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 5232 ax-pow 5303 ax-pr 5371 ax-un 7683 |
| 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 5631 df-rel 5632 df-cnv 5633 df-dm 5635 df-rn 5636 df-fun 6495 df-fn 6496 df-f 6497 |
| This theorem is referenced by: elmapg 8780 f1oen2g 8909 f1dom2g 8910 dom3d 8935 domssex2 9069 domssex 9070 mapxpen 9075 oismo 9449 wdomima2g 9495 dfac8clem 9948 acni2 9962 acnlem 9964 dfac4 10038 dfac2a 10046 axdc2lem 10364 axdc4lem 10371 axcclem 10373 mpoaddex 12932 addex 12933 mpomulex 12934 mulex 12935 seqf1olem2 13998 seqf1o 13999 limsuple 15434 limsuplt 15435 limsupbnd1 15438 caucvgrlem 15629 prdsplusg 17415 prdsmulr 17416 prdsvsca 17417 prdshom 17424 gsumval 18639 frmdplusg 18816 isghm 19184 odinf 19532 staffval 20812 cnfldcj 21356 cnfldds 21359 cnfldcjOLD 21369 cnflddsOLD 21372 xrsadd 21378 xrsmul 21379 xrsds 21402 ocvfval 21659 cnpfval 23212 iscnp2 23217 fmf 23923 tsmsval 24109 blfvalps 24361 nmfval 24566 tngnm 24629 tngngp2 24630 tngngpd 24631 tngngp 24632 nmoffn 24689 nmofval 24692 ishtpy 24952 tcphex 25197 elno 27626 adjeu 31978 ismeas 34362 isismty 38139 rrnval 38165 subex 42703 absex 42704 cjex 42705 sn-isghm 43123 |
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