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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 4041 | . 2 ⊢ ({𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} ↔ ∀𝑥(𝜑 → 𝜓)) | |
2 | ss2abi.1 | . 2 ⊢ (𝜑 → 𝜓) | |
3 | 1, 2 | mpgbir 1800 | 1 ⊢ {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 {cab 2801 ⊆ wss 3938 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-in 3945 df-ss 3954 |
This theorem is referenced by: abssi 4048 rabssab 4062 pwpwssunieq 5028 intabs 5247 abssexg 5285 imassrn 5942 fvclss 7003 fabexg 7641 f1oabexg 7644 mapex 8414 tc2 9186 hta 9328 infmap2 9642 cflm 9674 cflim2 9687 hsmex3 9858 domtriomlem 9866 axdc3lem2 9875 brdom7disj 9955 brdom6disj 9956 npex 10410 hashf1lem2 13817 issubc 17107 isghm 18360 permsetex 18500 symgbas 18501 symgbasfi 18509 tgval 21565 ustfn 22812 ustval 22813 ustn0 22831 birthdaylem1 25531 rgrprc 27375 wksfval 27393 mptctf 30455 measbase 31458 measval 31459 ismeas 31460 isrnmeas 31461 ballotlem2 31748 subfaclefac 32425 satfvsuclem1 32608 dfon2lem2 33031 nosupno 33205 poimirlem4 34898 poimirlem9 34903 poimirlem26 34920 poimirlem27 34921 poimirlem28 34922 poimirlem32 34926 sdclem2 35019 lineset 36876 lautset 37220 pautsetN 37236 tendoset 37897 eldiophb 39361 hbtlem1 39730 hbtlem7 39732 relopabVD 41242 rabexgf 41288 prprval 43683 upwlksfval 44017 |
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