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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 4619 | . 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 1542 ∈ wcel 2114 ∀wral 3051 Vcvv 3429 {csn 4567 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-v 3431 df-sn 4568 |
| This theorem is referenced by: xpord2indlem 8097 xpord3inddlem 8104 naddcllem 8612 naddasslem1 8630 naddasslem2 8631 elixpsn 8885 frfi 9195 dffi3 9344 ssttrcl 9636 ttrclss 9641 ttrclselem2 9647 fseqenlem1 9946 fpwwe2lem12 10565 hashbc 14415 hashf1lem1 14417 eqs1 14575 cshw1 14784 rpnnen2lem11 16191 drsdirfi 18271 0subg 19127 0subgALT 19543 efgsp1 19712 dprd2da 20019 lbsextlem4 21159 rnglidl0 21227 ply1coe 22263 mat0dimcrng 22435 txkgen 23617 xkoinjcn 23652 isufil2 23873 ust0 24185 prdsxmetlem 24333 prdsbl 24456 finiunmbl 25511 xrlimcnp 26932 chtub 27175 2sqlem10 27391 dchrisum0flb 27473 pntpbnd1 27549 conway 27771 etaslts 27785 lesrec 27791 bday1 27806 madebdaylemlrcut 27891 precsexlem9 28207 oncutlt 28256 oniso 28263 n0fincut 28347 bdayn0p1 28361 zcuts 28399 twocut 28415 halfcut 28450 addhalfcut 28451 pw2cut2 28454 1reno 28489 usgr1e 29314 nbgr2vtx1edg 29419 nbuhgr2vtx1edgb 29421 wlkl1loop 29706 crctcshwlkn0lem7 29884 2pthdlem1 29998 rusgrnumwwlkl1 30039 clwwlkccatlem 30059 clwwlkn2 30114 clwwlkel 30116 clwwlkwwlksb 30124 1wlkdlem4 30210 h1deoi 31620 vieta 33724 bnj149 35017 subfacp1lem5 35366 cvmlift2lem1 35484 cvmlift2lem12 35496 lindsenlbs 37936 poimirlem28 37969 poimirlem32 37973 heibor1lem 38130 nadd1suc 43820 nregmodel 45444 usgrexmpl1lem 48497 usgrexmpl2lem 48502 isinito2lem 49973 setc1onsubc 50077 |
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