Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > ralsn | Structured version Visualization version GIF version |
Description: Convert a quantification over 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 4612 | . 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 208 = wceq 1533 ∈ wcel 2110 ∀wral 3138 Vcvv 3494 {csn 4566 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-v 3496 df-sbc 3772 df-sn 4567 |
This theorem is referenced by: elixpsn 8500 frfi 8762 dffi3 8894 fseqenlem1 9449 fpwwe2lem13 10063 hashbc 13810 hashf1lem1 13812 eqs1 13965 cshw1 14183 rpnnen2lem11 15576 drsdirfi 17547 0subg 18303 efgsp1 18862 dprd2da 19163 lbsextlem4 19932 ply1coe 20463 mat0dimcrng 21078 txkgen 22259 xkoinjcn 22294 isufil2 22515 ust0 22827 prdsxmetlem 22977 prdsbl 23100 finiunmbl 24144 xrlimcnp 25545 chtub 25787 2sqlem10 26003 dchrisum0flb 26085 pntpbnd1 26161 usgr1e 27026 nbgr2vtx1edg 27131 nbuhgr2vtx1edgb 27133 wlkl1loop 27418 crctcshwlkn0lem7 27593 2pthdlem1 27708 rusgrnumwwlkl1 27746 clwwlkccatlem 27766 clwwlkn2 27821 clwwlkel 27824 clwwlkwwlksb 27832 1wlkdlem4 27918 h1deoi 29325 bnj149 32147 subfacp1lem5 32431 cvmlift2lem1 32549 cvmlift2lem12 32561 conway 33264 etasslt 33274 slerec 33277 lindsenlbs 34886 poimirlem28 34919 poimirlem32 34923 heibor1lem 35086 |
Copyright terms: Public domain | W3C validator |