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Mirrors > Home > MPE Home > Th. List > vtoclga | Structured version Visualization version GIF version |
Description: Implicit substitution of a class for a setvar variable. (Contributed by NM, 20-Aug-1995.) Avoid ax-10 2145 and ax-11 2161. (Revised by Gino Giotto, 20-Aug-2023.) |
Ref | Expression |
---|---|
vtoclga.1 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
vtoclga.2 | ⊢ (𝑥 ∈ 𝐵 → 𝜑) |
Ref | Expression |
---|---|
vtoclga | ⊢ (𝐴 ∈ 𝐵 → 𝜓) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq1 2902 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝑥 ∈ 𝐵 ↔ 𝐴 ∈ 𝐵)) | |
2 | vtoclga.1 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
3 | 1, 2 | imbi12d 347 | . . 3 ⊢ (𝑥 = 𝐴 → ((𝑥 ∈ 𝐵 → 𝜑) ↔ (𝐴 ∈ 𝐵 → 𝜓))) |
4 | vtoclga.2 | . . 3 ⊢ (𝑥 ∈ 𝐵 → 𝜑) | |
5 | 3, 4 | vtoclg 3569 | . 2 ⊢ (𝐴 ∈ 𝐵 → (𝐴 ∈ 𝐵 → 𝜓)) |
6 | 5 | pm2.43i 52 | 1 ⊢ (𝐴 ∈ 𝐵 → 𝜓) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1537 ∈ wcel 2114 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-cleq 2816 df-clel 2895 |
This theorem is referenced by: vtocl2ga 3577 vtoclri 3587 disjxiun 5065 wfis3 6191 opabiota 6748 fvmpt3 6774 fvmptss 6782 fnressn 6922 fressnfv 6924 caovord 7361 caovmo 7387 ordunisuc 7549 tfis3 7574 wfr2a 7974 onfununi 7980 smogt 8006 tz7.44-1 8044 tz7.44-2 8045 tz7.44-3 8046 nnacl 8239 nnmcl 8240 nnecl 8241 nnacom 8245 nnaass 8250 nndi 8251 nnmass 8252 nnmsucr 8253 nnmcom 8254 nnmordi 8259 ixpfn 8469 findcard 8759 findcard2 8760 marypha1 8900 cantnfle 9136 cantnflem1 9154 cnfcom 9165 fseqenlem1 9452 ackbij1lem8 9651 cardcf 9676 cfsmolem 9694 wunex2 10162 ingru 10239 recrecnq 10391 prlem934 10457 nn1suc 11662 uzind4s2 12312 rpnnen1lem6 12384 cnref1o 12387 xmulasslem 12681 om2uzsuci 13319 expcl2lem 13444 hashpw 13800 seqcoll 13825 climub 15020 climserle 15021 sumrblem 15070 fsumcvg 15071 summolem2a 15074 infcvgaux2i 15215 prodfn0 15252 prodfrec 15253 prodrblem 15285 fprodcvg 15286 prodmolem2a 15290 divalglem8 15753 bezoutlem1 15889 alginv 15921 algcvg 15922 algcvga 15925 algfx 15926 prmind2 16031 prmpwdvds 16242 cnextfvval 22675 xrsxmet 23419 xrhmeo 23552 cmetcaulem 23893 bcth3 23936 itg2addlem 24361 taylfval 24949 sinord 25120 logexprlim 25803 lgsdir2lem4 25906 hlim2 28971 elnlfn 29707 lnconi 29812 chirredlem3 30171 chirredlem4 30172 cnre2csqlem 31155 eulerpartlemsf 31619 eulerpartlemn 31641 bnj1321 32301 bnj1418 32314 subfacp1lem1 32428 frins3 33095 fpr2 33142 frr2 33147 nn0prpwlem 33672 findreccl 33803 mptsnunlem 34621 rdgeqoa 34653 domalom 34687 poimirlem22 34916 poimirlem26 34920 mblfinlem3 34933 mblfinlem4 34934 ismblfin 34935 ftc1anclem3 34971 ftc1anclem8 34976 sdclem2 35019 iscringd 35278 renegclALT 36101 zindbi 39550 fmuldfeq 41871 sumnnodd 41918 iblspltprt 42265 stoweidlem2 42294 stoweidlem17 42309 stoweidlem21 42313 stoweidlem43 42335 stoweidlem51 42343 wallispi 42362 |
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