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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 3402 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
| 2 | 1 | sseq1i 3964 | . 2 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ⊆ 𝐵) |
| 3 | abss 4016 | . 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 3401 ⊆ wss 3903 |
| 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 3402 df-ss 3920 |
| This theorem is referenced by: rabssdv 4028 fnsuppres 8143 wemapso2lem 9469 tskwe2 10696 grothac 10753 uzwo3 12868 fsuppmapnn0fiub0 13928 dvdsssfz1 16257 phibndlem 16709 dfphi2 16713 ramval 16948 mgmidsssn0 18609 istopon 22868 ordtrest2lem 23159 filssufilg 23867 cfinufil 23884 blsscls2 24460 nmhmcn 25088 ovolshftlem2 25479 atansssdm 26911 leftf 27863 rightf 27864 umgrres1lem 29395 upgrres1 29398 sspval 30811 ubthlem2 30959 ordtrest2NEWlem 34100 truae 34421 poimirlem30 37901 nnubfi 38001 prnc 38318 supminfrnmpt 45803 supminfxrrnmpt 45829 itgperiod 46339 fourierdlem81 46545 ovnsupge0 46915 smflimlem2 47130 |
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