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| Mirrors > Home > MPE Home > Th. List > ralsn | Structured version Visualization version GIF version | ||
| Description: Convert a universal quantification restricted to a singleton to a substitution. (Contributed by NM, 27-Apr-2009.) |
| Ref | Expression |
|---|---|
| ralsn.1 | ⊢ 𝐴 ∈ V |
| ralsn.2 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
| Ref | Expression |
|---|---|
| ralsn | ⊢ (∀𝑥 ∈ {𝐴}𝜑 ↔ 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ralsn.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | ralsn.2 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 3 | 2 | ralsng 4632 | . 2 ⊢ (𝐴 ∈ V → (∀𝑥 ∈ {𝐴}𝜑 ↔ 𝜓)) |
| 4 | 1, 3 | ax-mp 5 | 1 ⊢ (∀𝑥 ∈ {𝐴}𝜑 ↔ 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∈ wcel 2113 ∀wral 3051 Vcvv 3440 {csn 4580 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1544 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-v 3442 df-sn 4581 |
| This theorem is referenced by: xpord2indlem 8089 xpord3inddlem 8096 naddcllem 8604 naddasslem1 8622 naddasslem2 8623 elixpsn 8875 frfi 9185 dffi3 9334 ssttrcl 9624 ttrclss 9629 ttrclselem2 9635 fseqenlem1 9934 fpwwe2lem12 10553 hashbc 14376 hashf1lem1 14378 eqs1 14536 cshw1 14745 rpnnen2lem11 16149 drsdirfi 18228 0subg 19081 0subgALT 19497 efgsp1 19666 dprd2da 19973 lbsextlem4 21116 rnglidl0 21184 ply1coe 22242 mat0dimcrng 22414 txkgen 23596 xkoinjcn 23631 isufil2 23852 ust0 24164 prdsxmetlem 24312 prdsbl 24435 finiunmbl 25501 xrlimcnp 26934 chtub 27179 2sqlem10 27395 dchrisum0flb 27477 pntpbnd1 27553 conway 27775 etaslts 27789 lesrec 27795 bday1 27810 madebdaylemlrcut 27895 precsexlem9 28211 oncutlt 28260 oniso 28267 n0fincut 28351 bdayn0p1 28365 zcuts 28403 twocut 28419 halfcut 28454 addhalfcut 28455 pw2cut2 28458 1reno 28493 usgr1e 29318 nbgr2vtx1edg 29423 nbuhgr2vtx1edgb 29425 wlkl1loop 29711 crctcshwlkn0lem7 29889 2pthdlem1 30003 rusgrnumwwlkl1 30044 clwwlkccatlem 30064 clwwlkn2 30119 clwwlkel 30121 clwwlkwwlksb 30129 1wlkdlem4 30215 h1deoi 31624 vieta 33736 bnj149 35031 subfacp1lem5 35378 cvmlift2lem1 35496 cvmlift2lem12 35508 lindsenlbs 37812 poimirlem28 37845 poimirlem32 37849 heibor1lem 38006 nadd1suc 43630 nregmodel 45254 usgrexmpl1lem 48263 usgrexmpl2lem 48268 isinito2lem 49739 setc1onsubc 49843 |
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