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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 2900 | . . . 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 3567 | . 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 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-ex 1781 df-cleq 2814 df-clel 2893 |
This theorem is referenced by: vtocl2ga 3575 vtoclri 3585 disjxiun 5063 wfis3 6189 opabiota 6746 fvmpt3 6772 fvmptss 6780 fnressn 6920 fressnfv 6922 caovord 7359 caovmo 7385 ordunisuc 7547 tfis3 7572 wfr2a 7972 onfununi 7978 smogt 8004 tz7.44-1 8042 tz7.44-2 8043 tz7.44-3 8044 nnacl 8237 nnmcl 8238 nnecl 8239 nnacom 8243 nnaass 8248 nndi 8249 nnmass 8250 nnmsucr 8251 nnmcom 8252 nnmordi 8257 ixpfn 8467 findcard 8757 findcard2 8758 marypha1 8898 cantnfle 9134 cantnflem1 9152 cnfcom 9163 fseqenlem1 9450 ackbij1lem8 9649 cardcf 9674 cfsmolem 9692 wunex2 10160 ingru 10237 recrecnq 10389 prlem934 10455 nn1suc 11660 uzind4s2 12310 rpnnen1lem6 12382 cnref1o 12385 xmulasslem 12679 om2uzsuci 13317 expcl2lem 13442 hashpw 13798 seqcoll 13823 climub 15018 climserle 15019 sumrblem 15068 fsumcvg 15069 summolem2a 15072 infcvgaux2i 15213 prodfn0 15250 prodfrec 15251 prodrblem 15283 fprodcvg 15284 prodmolem2a 15288 divalglem8 15751 bezoutlem1 15887 alginv 15919 algcvg 15920 algcvga 15923 algfx 15924 prmind2 16029 prmpwdvds 16240 cnextfvval 22673 xrsxmet 23417 xrhmeo 23550 cmetcaulem 23891 bcth3 23934 itg2addlem 24359 taylfval 24947 sinord 25118 logexprlim 25801 lgsdir2lem4 25904 hlim2 28969 elnlfn 29705 lnconi 29810 chirredlem3 30169 chirredlem4 30170 cnre2csqlem 31153 eulerpartlemsf 31617 eulerpartlemn 31639 bnj1321 32299 bnj1418 32312 subfacp1lem1 32426 frins3 33093 fpr2 33140 frr2 33145 nn0prpwlem 33670 findreccl 33801 mptsnunlem 34622 rdgeqoa 34654 domalom 34688 poimirlem22 34929 poimirlem26 34933 mblfinlem3 34946 mblfinlem4 34947 ismblfin 34948 ftc1anclem3 34984 ftc1anclem8 34989 sdclem2 35032 iscringd 35291 renegclALT 36114 zindbi 39563 fmuldfeq 41884 sumnnodd 41931 iblspltprt 42278 stoweidlem2 42307 stoweidlem17 42322 stoweidlem21 42326 stoweidlem43 42348 stoweidlem51 42356 wallispi 42375 |
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