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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 4637 | . 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 209 = wceq 1563 ∈ wcel 2145 ∀wral 3079 Vcvv 3457 {csn 4585 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1566 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-ral 3080 df-v 3459 df-sn 4586 |
| This theorem is referenced by: xpord2indlem 8131 xpord3inddlem 8138 naddcllem 8650 naddasslem1 8669 naddasslem2 8670 elixpsn 8923 frfi 9233 dffi3 9379 ssttrcl 9672 ttrclss 9677 ttrclselem2 9683 fseqenlem1 9996 fpwwe2lem12 10615 hashbc 14480 hashf1lem1 14482 eqs1 14640 cshw1 14849 rpnnen2lem11 16270 drsdirfi 18351 0subg 19209 0subgALT 19629 efgsp1 19798 dprd2da 20105 lbsextlem4 21254 rnglidl0 21324 ply1coe 22419 mat0dimcrng 22588 txkgen 23770 xkoinjcn 23805 isufil2 24026 ust0 24338 prdsxmetlem 24486 prdsbl 24609 finiunmbl 25664 xrlimcnp 27091 chtub 27334 2sqlem10 27550 dchrisum0flb 27632 pntpbnd1 27708 conway 27930 etaslts 27944 lesrec 27950 bday1 27965 madebdaylemlrcut 28050 precsexlem9 28366 oncutlt 28415 oniso 28422 n0fincut 28506 bdayn0p1 28520 zcuts 28558 twocut 28574 halfcut 28609 addhalfcut 28610 pw2cut2 28613 1reno 28648 usgr1e 29504 nbgr2vtx1edg 29609 nbuhgr2vtx1edgb 29611 wlkl1loop 29896 crctcshwlkn0lem7 30074 2pthdlem1 30188 rusgrnumwwlkl1 30229 clwwlkccatlem 30249 clwwlkn2 30304 clwwlkel 30306 clwwlkwwlksb 30314 1wlkdlem4 30400 h1deoi 31810 selvply1rhmlemb 33826 vieta 33887 bnj149 35180 subfacp1lem5 35547 cvmlift2lem1 35665 cvmlift2lem12 35677 lindsenlbs 38126 poimirlem28 38159 poimirlem32 38163 heibor1lem 38320 nadd1suc 43981 nregmodel 45591 usgrexmpl1lem 48641 usgrexmpl2lem 48646 isinito2lem 50127 setc1onsubc 50231 |
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