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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 3074 | . . 3 ⊢ {𝑥 ∈ 𝐴 ∣ 𝜑} = {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} | |
2 | 1 | sseq1i 3953 | . 2 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ {𝑥 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ⊆ 𝐵) |
3 | abss 3998 | . 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 1825 | . . 3 ⊢ (∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ ∀𝑥(𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) |
6 | df-ral 3070 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵) ↔ ∀𝑥(𝑥 ∈ 𝐴 → (𝜑 → 𝑥 ∈ 𝐵))) | |
7 | 5, 6 | bitr4i 277 | . 2 ⊢ (∀𝑥((𝑥 ∈ 𝐴 ∧ 𝜑) → 𝑥 ∈ 𝐵) ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
8 | 2, 3, 7 | 3bitri 296 | 1 ⊢ ({𝑥 ∈ 𝐴 ∣ 𝜑} ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 (𝜑 → 𝑥 ∈ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∀wal 1539 ∈ wcel 2109 {cab 2716 ∀wral 3065 {crab 3069 ⊆ wss 3891 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-tru 1544 df-ex 1786 df-nf 1790 df-sb 2071 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ral 3070 df-rab 3074 df-v 3432 df-in 3898 df-ss 3908 |
This theorem is referenced by: rabssdv 4012 fnsuppres 7991 wemapso2lem 9272 tskwe2 10513 grothac 10570 uzwo3 12665 fsuppmapnn0fiub0 13694 dvdsssfz1 16008 phibndlem 16452 dfphi2 16456 ramval 16690 mgmidsssn0 18337 istopon 22042 ordtrest2lem 22335 filssufilg 23043 cfinufil 23060 blsscls2 23641 nmhmcn 24264 ovolshftlem2 24655 atansssdm 26064 umgrres1lem 27658 upgrres1 27661 sspval 29064 ubthlem2 29212 ordtrest2NEWlem 31851 truae 32190 leftf 34028 rightf 34029 poimirlem30 35786 nnubfi 35887 prnc 36204 supminfrnmpt 42939 supminfxrrnmpt 42965 itgperiod 43476 fourierdlem81 43682 ovnsupge0 44049 smflimlem2 44258 |
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