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| Mirrors > Home > MPE Home > Th. List > rabss | Structured version Visualization version GIF version | ||
| Description: Restricted class abstraction in a subclass relationship. (Contributed by NM, 16-Aug-2006.) |
| Ref | Expression |
|---|---|
| rabss | ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-rab 3391 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
| 2 | 1 | sseq1i 3951 | . 2 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ⊆ 𝐵) |
| 3 | abss 4003 | . 2 ⊢ ({𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ⊆ 𝐵 ↔ ∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵)) | |
| 4 | impexp 450 | . . . 4 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ (𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) | |
| 5 | 4 | albii 1821 | . . 3 ⊢ (∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ ∀𝑥(𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) |
| 6 | df-ral 3053 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵) ↔ ∀𝑥(𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) | |
| 7 | 5, 6 | bitr4i 278 | . 2 ⊢ (∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
| 8 | 2, 3, 7 | 3bitri 297 | 1 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
| 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: rabssdv 4015 fnsuppres 8135 wemapso2lem 9461 tskwe2 10690 grothac 10747 uzwo3 12887 fsuppmapnn0fiub0 13949 dvdsssfz1 16281 phibndlem 16734 dfphi2 16738 ramval 16973 mgmidsssn0 18634 istopon 22890 ordtrest2lem 23181 filssufilg 23889 cfinufil 23906 blsscls2 24482 nmhmcn 25100 ovolshftlem2 25490 atansssdm 26913 leftf 27864 rightf 27865 umgrres1lem 29396 upgrres1 29399 sspval 30812 ubthlem2 30960 ordtrest2NEWlem 34085 truae 34406 poimirlem30 37988 nnubfi 38088 prnc 38405 supminfrnmpt 45894 supminfxrrnmpt 45920 itgperiod 46430 fourierdlem81 46636 ovnsupge0 47006 smflimlem2 47221 |
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