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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 3406 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
2 | 1 | sseq2i 3976 | . 2 ⊢ (𝐵 ⊆ {𝑥 ∈ 𝐴 ∣ 𝜑} ↔ 𝐵 ⊆ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)}) |
3 | ssab 4023 | . 2 ⊢ (𝐵 ⊆ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ↔ ∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑))) | |
4 | dfss3 3935 | . . . 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 3110 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 (𝑥 ∈ 𝐴 ∧ 𝜑) ↔ (∀𝑥 ∈ 𝐵 𝑥 ∈ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) | |
7 | df-ral 3061 | . . 3 ⊢ (∀𝑥 ∈ 𝐵 (𝑥 ∈ 𝐴 ∧ 𝜑) ↔ ∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑))) | |
8 | 5, 6, 7 | 3bitr2ri 299 | . 2 ⊢ (∀𝑥(𝑥 ∈ 𝐵 → (𝑥 ∈ 𝐴 ∧ 𝜑)) ↔ (𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
9 | 2, 3, 8 | 3bitri 296 | 1 ⊢ (𝐵 ⊆ {𝑥 ∈ 𝐴 ∣ 𝜑} ↔ (𝐵 ⊆ 𝐴 ∧ ∀𝑥 ∈ 𝐵 𝜑)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∀wal 1539 ∈ wcel 2106 {cab 2708 ∀wral 3060 {crab 3405 ⊆ wss 3913 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-tru 1544 df-ex 1782 df-nf 1786 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ral 3061 df-rab 3406 df-v 3448 df-in 3920 df-ss 3930 |
This theorem is referenced by: ssrabdv 4036 omssnlim 7822 ordtypelem2 9464 ordtypelem10 9472 card2inf 9500 r0weon 9957 ramtlecl 16883 sscntz 19120 ppttop 22394 epttop 22396 cmpcov2 22778 tgcmp 22789 xkoinjcn 23075 fbssfi 23225 filssufilg 23299 uffixfr 23311 tmdgsum2 23484 symgtgp 23494 ghmcnp 23503 blcls 23899 clsocv 24651 lhop1lem 25414 ressatans 26321 axcontlem3 27978 axcontlem4 27979 ldgenpisyslem3 32853 ldgenpisys 32854 imambfm 32951 lfuhgr 33798 connpconn 33916 cvmlift2lem11 33994 cvmlift2lem12 33995 bj-rabtr 35473 hbtlem6 41514 |
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