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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 4614 | . 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 207 = wceq 1547 ∈ wcel 2119 ∀wral 3054 Vcvv 3432 {csn 4562 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-ral 3055 df-v 3434 df-sn 4563 |
| This theorem is referenced by: xpord2indlem 8094 xpord3inddlem 8101 naddcllem 8609 naddasslem1 8627 naddasslem2 8628 elixpsn 8882 frfi 9192 dffi3 9341 ssttrcl 9634 ttrclss 9639 ttrclselem2 9645 fseqenlem1 9944 fpwwe2lem12 10563 hashbc 14413 hashf1lem1 14415 eqs1 14573 cshw1 14782 rpnnen2lem11 16189 drsdirfi 18269 0subg 19125 0subgALT 19541 efgsp1 19710 dprd2da 20017 lbsextlem4 21161 rnglidl0 21229 ply1coe 22291 mat0dimcrng 22460 txkgen 23642 xkoinjcn 23677 isufil2 23898 ust0 24210 prdsxmetlem 24358 prdsbl 24481 finiunmbl 25536 xrlimcnp 26957 chtub 27200 2sqlem10 27416 dchrisum0flb 27498 pntpbnd1 27574 conway 27796 etaslts 27810 lesrec 27816 bday1 27831 madebdaylemlrcut 27916 precsexlem9 28232 oncutlt 28281 oniso 28288 n0fincut 28372 bdayn0p1 28386 zcuts 28424 twocut 28440 halfcut 28475 addhalfcut 28476 pw2cut2 28479 1reno 28514 usgr1e 29339 nbgr2vtx1edg 29444 nbuhgr2vtx1edgb 29446 wlkl1loop 29731 crctcshwlkn0lem7 29909 2pthdlem1 30023 rusgrnumwwlkl1 30064 clwwlkccatlem 30084 clwwlkn2 30139 clwwlkel 30141 clwwlkwwlksb 30149 1wlkdlem4 30235 h1deoi 31645 selvply1rhmlemb 33710 vieta 33771 bnj149 35064 subfacp1lem5 35419 cvmlift2lem1 35537 cvmlift2lem12 35549 lindsenlbs 37989 poimirlem28 38022 poimirlem32 38026 heibor1lem 38183 nadd1suc 43844 nregmodel 45468 usgrexmpl1lem 48519 usgrexmpl2lem 48524 isinito2lem 49995 setc1onsubc 50099 |
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