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| Mirrors > Home > MPE Home > Th. List > sselpwd | Structured version Visualization version GIF version | ||
| Description: Membership in a power set. (Contributed by Thierry Arnoux, 18-May-2020.) |
| Ref | Expression |
|---|---|
| sselpwd.1 | ⊢ (𝜑 → 𝐵 ∈ 𝑉) |
| sselpwd.2 | ⊢ (𝜑 → 𝐴 ⊆ 𝐵) |
| Ref | Expression |
|---|---|
| sselpwd | ⊢ (𝜑 → 𝐴 ∈ 𝒫 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sselpwd.1 | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑉) | |
| 2 | sselpwd.2 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ 𝐵) | |
| 3 | 1, 2 | ssexd 5290 | . 2 ⊢ (𝜑 → 𝐴 ∈ V) |
| 4 | 3, 2 | elpwd 4566 | 1 ⊢ (𝜑 → 𝐴 ∈ 𝒫 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 Vcvv 3454 ⊆ wss 3900 𝒫 cpw 4560 |
| 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 5252 |
| This proof depends on definitions: df-bi 210 df-an 402 df-3an 1105 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-v 3456 df-ss 3901 df-in 4094 df-pw 4562 |
| This theorem is used by: knatar 7387 marypha1 9450 fin1a2lem7 10508 canthp1lem2 10762 wunss 10821 ramub1lem1 17230 mreexd 17842 mreexexlemd 17844 mreexexlem4d 17847 opsrval 22382 selvfval 22455 cncls 23619 fbasrn 24230 rnelfmlem 24298 ustssel 24552 hashimaf1 33469 pwrssmgc 33628 esplyfv1 34268 exsslsb 34296 crefi 34546 ldsysgenld 34860 ldgenpisyslem1 34863 bj-ismoored 38218 bj-imdirval2 38295 bj-iminvval2 38306 sticksstones2 43388 rfovcnvf1od 45194 fsovrfovd 45199 fsovfd 45202 fsovcnvlem 45203 ntrclsrcomplex 45225 clsk3nimkb 45230 clsk1indlem4 45234 clsk1indlem1 45235 ntrclsiso 45257 ntrclskb 45259 ntrclsk3 45260 ntrclsk13 45261 ntrneircomplex 45264 ntrneik3 45286 ntrneix3 45287 ntrneik13 45288 ntrneix13 45289 clsneircomplex 45293 clsneiel1 45298 neicvgrcomplex 45303 neicvgel1 45309 mnussd 45437 mnuprssd 45443 mnuop3d 45445 wessf1ornlem 46403 dvnprodlem1 47159 ovolsplit 47201 saliunclf 47535 sge0f1o 47595 isisubgr 49163 iscnrm3rlem3 50259 |
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