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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 4038 | . 2 ⊢ ({𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} ↔ ∀𝑥(𝜑 → 𝜓)) | |
2 | ss2abi.1 | . 2 ⊢ (𝜑 → 𝜓) | |
3 | 1, 2 | mpgbir 1796 | 1 ⊢ {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 {cab 2799 ⊆ wss 3935 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-in 3942 df-ss 3951 |
This theorem is referenced by: abssi 4045 rabssab 4059 pwpwssunieq 5025 intabs 5244 abssexg 5282 imassrn 5939 fvclss 7000 fabexg 7638 f1oabexg 7641 mapex 8411 tc2 9183 hta 9325 infmap2 9639 cflm 9671 cflim2 9684 hsmex3 9855 domtriomlem 9863 axdc3lem2 9872 brdom7disj 9952 brdom6disj 9953 npex 10407 hashf1lem2 13813 issubc 17104 isghm 18357 permsetex 18497 symgbas 18498 symgbasfi 18506 tgval 21562 ustfn 22809 ustval 22810 ustn0 22828 birthdaylem1 25528 rgrprc 27372 wksfval 27390 mptctf 30452 measbase 31456 measval 31457 ismeas 31458 isrnmeas 31459 ballotlem2 31746 subfaclefac 32423 satfvsuclem1 32606 dfon2lem2 33029 nosupno 33203 poimirlem4 34895 poimirlem9 34900 poimirlem26 34917 poimirlem27 34918 poimirlem28 34919 poimirlem32 34923 sdclem2 35016 lineset 36873 lautset 37217 pautsetN 37233 tendoset 37894 eldiophb 39352 hbtlem1 39721 hbtlem7 39723 relopabVD 41233 rabexgf 41279 prprval 43675 upwlksfval 44009 |
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