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| Mirrors > Home > MPE Home > Th. List > ssrab | Structured version Visualization version GIF version | ||
| Description: Subclass of a restricted class abstraction. (Contributed by NM, 16-Aug-2006.) |
| Ref | Expression |
|---|---|
| ssrab | ⊢ (𝐵 ⊆ {𝑥 ∈ 𝐴 ∣ 𝜑} ↔ (𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-rab 3400 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
| 2 | 1 | sseq2i 3963 | . 2 ⊢ (𝐵 ⊆ {𝑥 ∈ 𝐴 ∣ 𝜑} ↔ 𝐵 ⊆ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)}) |
| 3 | ssab 4015 | . 2 ⊢ (𝐵 ⊆ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ↔ ∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑))) | |
| 4 | dfss3 3922 | . . . 4 ⊢ (𝐵 ⊆ 𝐴 ↔ ∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴) | |
| 5 | 4 | anbi1i 624 | . . 3 ⊢ ((𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑) ↔ (∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
| 6 | r19.26 3096 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 (𝑥 ∈ 𝐴 ∧ 𝜑) ↔ (∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) | |
| 7 | df-ral 3052 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 (𝑥 ∈ 𝐴 ∧ 𝜑) ↔ ∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑))) | |
| 8 | 5, 6, 7 | 3bitr2ri 300 | . 2 ⊢ (∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑)) ↔ (𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
| 9 | 2, 3, 8 | 3bitri 297 | 1 ⊢ (𝐵 ⊆ {𝑥 ∈ 𝐴 ∣ 𝜑} ↔ (𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∀wal 1539 ∈ wcel 2113 {cab 2714 ∀wral 3051 {crab 3399 ⊆ wss 3901 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-tru 1544 df-ex 1781 df-nf 1785 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rab 3400 df-ss 3918 |
| This theorem is referenced by: ssrabdv 4025 omssnlim 7823 ordtypelem2 9424 ordtypelem10 9432 card2inf 9460 r0weon 9922 ramtlecl 16928 sscntz 19255 ppttop 22951 epttop 22953 cmpcov2 23334 tgcmp 23345 xkoinjcn 23631 fbssfi 23781 filssufilg 23855 uffixfr 23867 tmdgsum2 24040 symgtgp 24050 ghmcnp 24059 blcls 24450 clsocv 25206 lhop1lem 25974 ressatans 26900 axcontlem3 29039 axcontlem4 29040 ldgenpisyslem3 34322 ldgenpisys 34323 imambfm 34419 fineqvnttrclse 35280 lfuhgr 35312 connpconn 35429 cvmlift2lem11 35507 cvmlift2lem12 35508 bj-rabtr 37131 hbtlem6 43367 usgrexmpl1lem 48263 usgrexmpl2lem 48268 |
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