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Mirrors > Home > MPE Home > Th. List > ss2abi | Structured version Visualization version GIF version |
Description: Inference of abstraction subclass from implication. (Contributed by NM, 31-Mar-1995.) |
Ref | Expression |
---|---|
ss2abi.1 | ⊢ (𝜑 → 𝜓) |
Ref | Expression |
---|---|
ss2abi | ⊢ {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ss2ab 3633 | . 2 ⊢ ({𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} ↔ ∀𝑥(𝜑 → 𝜓)) | |
2 | ss2abi.1 | . 2 ⊢ (𝜑 → 𝜓) | |
3 | 1, 2 | mpgbir 1717 | 1 ⊢ {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 {cab 2596 ⊆ wss 3540 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-in 3547 df-ss 3554 |
This theorem is referenced by: abssi 3640 rabssab 3652 intabs 4752 abssexg 4777 imassrn 5396 fvclss 6404 fabexg 7015 f1oabexg 7018 mapex 7750 tc2 8501 hta 8643 infmap2 8923 cflm 8955 cflim2 8968 hsmex3 9139 domtriomlem 9147 axdc3lem2 9156 brdom7disj 9234 brdom6disj 9235 npex 9687 hashf1lem2 13097 issubc 16318 isghm 17483 symgbasfi 17629 tgval 20570 ustfn 21815 ustval 21816 ustn0 21834 birthdaylem1 24478 wlks 26047 trls 26066 mptctf 28883 measbase 29587 measval 29588 ismeas 29589 isrnmeas 29590 ballotlem2 29877 subfaclefac 30412 dfon2lem2 30933 bj-sspwpweq 32240 poimirlem4 32583 poimirlem9 32588 poimirlem26 32605 poimirlem27 32606 poimirlem28 32607 poimirlem32 32611 sdclem2 32708 lineset 34042 lautset 34386 pautsetN 34402 tendoset 35065 eldiophb 36338 hbtlem1 36712 hbtlem7 36714 relopabVD 38159 rabexgf 38206 rgrprc 40791 1wlksfval 40811 wlksfval 40812 |
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