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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 7263 is proven without the Axiom of Replacement ax-rep 5238, but depends on ax-un 7783, which is not required for the proof of fex 7263. (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 7796 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1148 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6767 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1151 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
| 5 | 2, 4 | ssexd 5293 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 ∈ wcel 2147 Vcvv 3454 ⊆ wss 3900 × cxp 5656 ⟶wf 6562 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-sep 5255 ax-pow 5334 ax-pr 5398 ax-un 7783 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-xp 5664 df-rel 5665 df-cnv 5666 df-dm 5668 df-rn 5669 df-fun 6568 df-fn 6569 df-f 6570 |
| This theorem is used by: elmapg 8897 f1oen2g 9033 f1dom2g 9034 dom3d 9059 domssex2 9194 domssex 9195 mapxpen 9200 oismo 9571 wdomima2g 9617 dfac8clem 10150 acni2 10164 acnlem 10166 dfac4 10240 dfac2a 10247 axdc2lem 10565 axdc4lem 10572 axcclem 10574 mpoaddex 13156 addex 13157 mpomulex 13158 mulex 13159 seqf1olem2 14225 seqf1o 14226 absex 15549 limsuple 15689 limsuplt 15690 limsupbnd1 15693 caucvgrlem 15884 prdsplusg 17679 prdsmulr 17680 prdsvsca 17681 prdshom 17688 gsumval 18916 frmdplusg 19100 isghm 19480 odinf 19828 staffval 21149 cnfldcj 21738 cnfldds 21741 xrsadd 21748 xrsmul 21749 xrsds 21768 ocvfval 22027 cnpfval 23607 iscnp2 23612 fmf 24319 tsmsval 24505 blfvalps 24757 nmfval 24962 tngnm 25025 tngngp2 25026 tngngpd 25027 tngngp 25028 nmoffn 25085 nmofval 25088 ishtpy 25348 tcphex 25593 elno 28060 adjeu 32548 ismeas 34943 isismty 39001 rrnval 39027 subex 43565 cjex 43566 sn-isghm 43950 grpgimcanon 46192 |
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