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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 3391 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
| 2 | 1 | sseq2i 3952 | . 2 ⊢ (𝐵 ⊆ {𝑥 ∈ 𝐴 ∣ 𝜑} ↔ 𝐵 ⊆ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)}) |
| 3 | ssab 4004 | . 2 ⊢ (𝐵 ⊆ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ↔ ∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑))) | |
| 4 | dfss3 3911 | . . . 4 ⊢ (𝐵 ⊆ 𝐴 ↔ ∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴) | |
| 5 | 4 | anbi1i 625 | . . 3 ⊢ ((𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑) ↔ (∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
| 6 | r19.26 3098 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 (𝑥 ∈ 𝐴 ∧ 𝜑) ↔ (∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) | |
| 7 | df-ral 3053 | . . 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 1540 ∈ wcel 2114 {cab 2715 ∀wral 3052 {crab 3390 ⊆ wss 3890 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-tru 1545 df-ex 1782 df-nf 1786 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ral 3053 df-rab 3391 df-ss 3907 |
| This theorem is referenced by: ssrabdv 4014 omssnlim 7825 ordtypelem2 9427 ordtypelem10 9435 card2inf 9463 r0weon 9925 ramtlecl 16962 sscntz 19292 ppttop 22982 epttop 22984 cmpcov2 23365 tgcmp 23376 xkoinjcn 23662 fbssfi 23812 filssufilg 23886 uffixfr 23898 tmdgsum2 24071 symgtgp 24081 ghmcnp 24090 blcls 24481 clsocv 25227 lhop1lem 25990 ressatans 26911 axcontlem3 29049 axcontlem4 29050 ldgenpisyslem3 34325 ldgenpisys 34326 imambfm 34422 fineqvnttrclse 35284 lfuhgr 35316 connpconn 35433 cvmlift2lem11 35511 cvmlift2lem12 35512 bj-rabtr 37253 hbtlem6 43575 usgrexmpl1lem 48509 usgrexmpl2lem 48514 |
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