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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 5285 | . 2 ⊢ (𝜑 → 𝐴 ∈ V) |
| 4 | 3, 2 | elpwd 4562 | 1 ⊢ (𝜑 → 𝐴 ∈ 𝒫 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 Vcvv 3450 ⊆ wss 3895 𝒫 cpw 4556 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-sep 5248 |
| This proof depends on definitions: df-bi 210 df-an 402 df-3an 1105 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-in 4091 df-pw 4558 |
| This theorem is used by: knatar 7367 marypha1 9426 fin1a2lem7 10484 canthp1lem2 10738 wunss 10797 ramub1lem1 17204 mreexd 17816 mreexexlemd 17818 mreexexlem4d 17821 opsrval 22355 selvfval 22428 cncls 23592 fbasrn 24203 rnelfmlem 24271 ustssel 24525 hashimaf1 33402 pwrssmgc 33561 esplyfv1 34201 exsslsb 34229 crefi 34479 ldsysgenld 34793 ldgenpisyslem1 34796 bj-ismoored 38028 bj-imdirval2 38105 bj-iminvval2 38116 sticksstones2 43198 rfovcnvf1od 45004 fsovrfovd 45009 fsovfd 45012 fsovcnvlem 45013 ntrclsrcomplex 45035 clsk3nimkb 45040 clsk1indlem4 45044 clsk1indlem1 45045 ntrclsiso 45067 ntrclskb 45069 ntrclsk3 45070 ntrclsk13 45071 ntrneircomplex 45074 ntrneik3 45096 ntrneix3 45097 ntrneik13 45098 ntrneix13 45099 clsneircomplex 45103 clsneiel1 45108 neicvgrcomplex 45113 neicvgel1 45119 mnussd 45247 mnuprssd 45253 mnuop3d 45255 wessf1ornlem 46200 dvnprodlem1 46956 ovolsplit 46998 saliunclf 47332 sge0f1o 47392 isisubgr 48960 iscnrm3rlem3 50050 |
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