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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 3424 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
| 2 | 1 | sseq1i 3973 | . 2 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ⊆ 𝐵) |
| 3 | abss 4024 | . 2 ⊢ ({𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ⊆ 𝐵 ↔ ∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵)) | |
| 4 | impexp 455 | . . . 4 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ (𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) | |
| 5 | 4 | albii 1846 | . . 3 ⊢ (∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ ∀𝑥(𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) |
| 6 | df-ral 3086 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵) ↔ ∀𝑥(𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) | |
| 7 | 5, 6 | bitr4i 281 | . 2 ⊢ (∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
| 8 | 2, 3, 7 | 3bitri 300 | 1 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∀wal 1565 ∈ wcel 2149 {cab 2747 ∀wral 3085 {crab 3423 ⊆ wss 3913 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-tru 1570 df-ex 1807 df-nf 1811 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ral 3086 df-rab 3424 df-ss 3930 |
| This theorem is referenced by: rabssdv 4036 fnsuppres 8186 wemapso2lem 9513 tskwe2 10757 grothac 10814 uzwo3 12966 fsuppmapnn0fiub0 14028 dvdsssfz1 16375 phibndlem 16828 dfphi2 16832 ramval 17067 mgmidsssn0 18729 istopon 23037 ordtrest2lem 23328 filssufilg 24036 cfinufil 24053 blsscls2 24629 nmhmcn 25247 ovolshftlem2 25637 atansssdm 27063 leftf 28013 rightf 28014 umgrres1lem 29600 upgrres1 29603 sspval 31015 ubthlem2 31163 ordtrest2NEWlem 34256 truae 34577 poimirlem30 38188 nnubfi 38288 prnc 38605 supminfrnmpt 46050 supminfxrrnmpt 46076 itgperiod 46586 fourierdlem81 46792 ovnsupge0 47162 smflimlem2 47377 |
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