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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.) Avoid ax-8 2113, ax-10 2142, ax-11 2158, ax-12 2175. (Revised by Gino Giotto, 28-Jun-2024.) |
Ref | Expression |
---|---|
ss2abi.1 | ⊢ (𝜑 → 𝜓) |
Ref | Expression |
---|---|
ss2abi | ⊢ {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tru 1542 | . 2 ⊢ ⊤ | |
2 | ss2abi.1 | . . . 4 ⊢ (𝜑 → 𝜓) | |
3 | 2 | a1i 11 | . . 3 ⊢ (⊤ → (𝜑 → 𝜓)) |
4 | 3 | ss2abdv 3991 | . 2 ⊢ (⊤ → {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓}) |
5 | 1, 4 | ax-mp 5 | 1 ⊢ {𝑥 ∣ 𝜑} ⊆ {𝑥 ∣ 𝜓} |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ⊤wtru 1539 {cab 2776 ⊆ wss 3881 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-tru 1541 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-in 3888 df-ss 3898 |
This theorem is referenced by: abssi 3997 rabssab 4011 pwpwssunieq 4989 intabs 5209 abssexg 5248 imassrn 5907 fvclss 6979 fabexg 7621 f1oabexg 7624 mapex 8395 tc2 9168 hta 9310 infmap2 9629 cflm 9661 cflim2 9674 hsmex3 9845 domtriomlem 9853 axdc3lem2 9862 brdom7disj 9942 brdom6disj 9943 npex 10397 hashf1lem2 13810 issubc 17097 isghm 18350 permsetex 18490 symgbas 18491 symgbasfi 18499 tgval 21560 ustfn 22807 ustval 22808 ustn0 22826 birthdaylem1 25537 rgrprc 27381 wksfval 27399 mptctf 30479 measbase 31566 measval 31567 ismeas 31568 isrnmeas 31569 ballotlem2 31856 subfaclefac 32536 satfvsuclem1 32719 dfon2lem2 33142 nosupno 33316 poimirlem4 35061 poimirlem9 35066 poimirlem26 35083 poimirlem27 35084 poimirlem28 35085 poimirlem32 35089 sdclem2 35180 lineset 37034 lautset 37378 pautsetN 37394 tendoset 38055 eldiophb 39698 hbtlem1 40067 hbtlem7 40069 relopabVD 41607 rabexgf 41653 prprval 44031 upwlksfval 44363 |
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