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| Mirrors > Home > MPE Home > Th. List > nfeq | Structured version Visualization version GIF version | ||
| Description: Hypothesis builder for equality. (Contributed by NM, 21-Jun-1993.) (Revised by Mario Carneiro, 11-Aug-2016.) (Proof shortened by Wolf Lammen, 16-Nov-2019.) |
| Ref | Expression |
|---|---|
| nfnfc.1 | ⊢ Ⅎ𝑥𝐴 |
| nfeq.2 | ⊢ Ⅎ𝑥𝐵 |
| Ref | Expression |
|---|---|
| nfeq | ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfnfc.1 | . . . 4 ⊢ Ⅎ𝑥𝐴 | |
| 2 | 1 | a1i 11 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐴) |
| 3 | nfeq.2 | . . . 4 ⊢ Ⅎ𝑥𝐵 | |
| 4 | 3 | a1i 11 | . . 3 ⊢ (⊤ → Ⅎ𝑥𝐵) |
| 5 | 2, 4 | nfeqd 2936 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1577 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ⊤wtru 1571 Ⅎwnf 1816 Ⅎwnfc 2911 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-tru 1573 df-ex 1813 df-nf 1817 df-cleq 2755 df-nfc 2913 |
| This theorem is used by: nfeq1 2941 nfeq2 2943 nfne 3062 raleqf 3345 rmoeq1f 3406 rabeqf 3449 csbhypf 3879 sbceqg 4373 nffn 6668 nffo 6825 fvmptd3f 7040 mpteqb 7044 fvmptf 7046 eqfnfv2f 7064 dff13f 7290 ovmpos 7600 ov2gf 7601 ovmpodxf 7602 ovmpodf 7608 eqerlem 8791 seqof2 14243 sumeq2ii 15904 sumss 15934 fsumadd 15950 fsummulc2 15994 fsumrelem 16018 prodeq1f 16119 prodeq2ii 16124 fprodmul 16171 fproddiv 16172 txcnp 23994 ptcnplem 23995 cnmpt11 24037 cnmpt21 24045 cnmptcom 24052 mbfeqalem1 26017 mbflim 26044 itgeq1f 26147 itgeqa 26189 dvmptfsum 26350 ulmss 26781 leibpi 27327 o1cxp 27359 lgseisenlem2 27760 nosupbnd1 28128 2ndresdju 33341 aciunf1lem 33354 deg1prod 34218 sigapildsys 34906 bnj1316 35561 bnj1446 35786 bnj1447 35787 bnj1448 35788 bnj1519 35806 bnj1520 35807 bnj1529 35811 subtr 37317 subtr2 37318 bj-sbeqALT 38027 poimirlem25 38831 iuneq2f 39354 mpobi123f 39360 mptbi12f 39364 dvdsrabdioph 44083 fphpd 44089 mnringmulrcld 45487 fvelrnbf 46309 refsum2cnlem1 46328 elrnmpt1sf 46477 choicefi 46487 axccdom 46508 uzublem 46713 fsumf1of 46859 fmuldfeq 46868 mccl 46883 climmulf 46889 climexp 46890 climsuse 46893 climrecf 46894 climaddf 46900 mullimc 46901 neglimc 46930 addlimc 46931 0ellimcdiv 46932 climeldmeqmpt 46951 climfveqmpt 46954 climfveqf 46963 climfveqmpt3 46965 climeldmeqf 46966 climeqf 46971 climeldmeqmpt3 46972 limsupubuzlem 46995 limsupequz 47006 dvnmptdivc 47221 dvmptfprod 47228 stoweidlem18 47301 stoweidlem31 47314 stoweidlem55 47338 stoweidlem59 47342 sge0iunmpt 47701 sge0reuz 47730 iundjiun 47743 hoicvrrex 47839 ovnhoilem1 47884 ovnlecvr2 47893 opnvonmbllem1 47915 vonioo 47965 vonicc 47968 smflim 48060 smfpimcclem 48090 smfpimcc 48091 cfsetsnfsetf 48401 ovmpordxf 49782 |
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