| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 7210 is proven without the Axiom of Replacement ax-rep 5227, but depends on ax-un 7718, which is not required for the proof of fex 7210. (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 7733 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 2 | 1 | 3adant1 1143 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
| 3 | fssxp 6719 | . . 3 ⊢ (𝐹:𝐴⟶𝐵 → 𝐹 ⊆ (𝐴 × 𝐵)) | |
| 4 | 3 | 3ad2ant1 1146 | . 2 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ⊆ (𝐴 × 𝐵)) |
| 5 | 2, 4 | ssexd 5280 | 1 ⊢ ((𝐹:𝐴⟶𝐵 ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝐹 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1098 ∈ wcel 2142 Vcvv 3454 ⊆ wss 3904 × cxp 5645 ⟶wf 6517 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 ax-sep 5246 ax-pow 5322 ax-pr 5390 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-sb 2091 df-clab 2741 df-cleq 2754 df-clel 2837 df-ral 3077 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-xp 5653 df-rel 5654 df-cnv 5655 df-dm 5657 df-rn 5658 df-fun 6523 df-fn 6524 df-f 6525 |
| This theorem is referenced by: elmapg 8820 f1oen2g 8949 f1dom2g 8950 dom3d 8975 domssex2 9109 domssex 9110 mapxpen 9115 oismo 9488 wdomima2g 9534 dfac8clem 9988 acni2 10002 acnlem 10004 dfac4 10078 dfac2a 10086 axdc2lem 10405 axdc4lem 10412 axcclem 10414 mpoaddex 12989 addex 12990 mpomulex 12991 mulex 12992 seqf1olem2 14055 seqf1o 14056 limsuple 15505 limsuplt 15506 limsupbnd1 15509 caucvgrlem 15700 prdsplusg 17487 prdsmulr 17488 prdsvsca 17489 prdshom 17496 gsumval 18711 frmdplusg 18888 isghm 19256 odinf 19603 staffval 20887 cnfldcj 21430 cnfldds 21433 xrsadd 21439 xrsmul 21440 xrsds 21459 ocvfval 21715 cnpfval 23291 iscnp2 23296 fmf 24002 tsmsval 24188 blfvalps 24440 nmfval 24645 tngnm 24708 tngngp2 24709 tngngpd 24710 tngngp 24711 nmoffn 24768 nmofval 24771 ishtpy 25031 tcphex 25276 elno 27707 adjeu 32089 ismeas 34493 isismty 38297 rrnval 38323 subex 42860 absex 42861 cjex 42862 sn-isghm 43252 |
| Copyright terms: Public domain | W3C validator |