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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 2910 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1549 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ⊤wtru 1543 Ⅎwnf 1785 Ⅎwnfc 2884 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-tru 1545 df-ex 1782 df-nf 1786 df-cleq 2729 df-nfc 2886 |
| This theorem is referenced by: nfeq1 2915 nfeq2 2917 nfne 3034 raleqf 3327 rexeqfOLD 3329 rmoeq1f 3391 rabeqf 3435 csbhypf 3879 sbceqg 4366 nffn 6599 nffo 6753 fvmptd3f 6965 mpteqb 6969 fvmptf 6971 eqfnfv2f 6989 dff13f 7211 ovmpos 7516 ov2gf 7517 ovmpodxf 7518 ovmpodf 7524 eqerlem 8681 seqof2 13995 sumeq2ii 15628 sumss 15659 fsumadd 15675 fsummulc2 15719 fsumrelem 15742 prodeq1f 15841 prodeq2ii 15846 fprodmul 15895 fproddiv 15896 txcnp 23576 ptcnplem 23577 cnmpt11 23619 cnmpt21 23627 cnmptcom 23634 mbfeqalem1 25610 mbflim 25637 itgeq1f 25740 itgeq1fOLD 25741 itgeqa 25783 dvmptfsum 25947 ulmss 26374 leibpi 26920 o1cxp 26953 lgseisenlem2 27355 nosupbnd1 27694 2ndresdju 32739 aciunf1lem 32752 deg1prod 33676 sigapildsys 34340 bnj1316 34996 bnj1446 35221 bnj1447 35222 bnj1448 35223 bnj1519 35241 bnj1520 35242 bnj1529 35246 subtr 36530 subtr2 36531 bj-sbeqALT 37148 poimirlem25 37896 iuneq2f 38407 mpobi123f 38413 mptbi12f 38417 dvdsrabdioph 43167 fphpd 43173 mnringmulrcld 44584 fvelrnbf 45378 refsum2cnlem1 45397 elrnmpt1sf 45548 choicefi 45558 axccdom 45580 uzublem 45788 fsumf1of 45934 fmuldfeq 45943 mccl 45958 climmulf 45964 climexp 45965 climsuse 45968 climrecf 45969 climaddf 45975 mullimc 45976 neglimc 46005 addlimc 46006 0ellimcdiv 46007 climeldmeqmpt 46026 climfveqmpt 46029 climfveqf 46038 climfveqmpt3 46040 climeldmeqf 46041 climeqf 46046 climeldmeqmpt3 46047 limsupubuzlem 46070 limsupequz 46081 dvnmptdivc 46296 dvmptfprod 46303 stoweidlem18 46376 stoweidlem31 46389 stoweidlem55 46413 stoweidlem59 46417 sge0iunmpt 46776 sge0reuz 46805 iundjiun 46818 hoicvrrex 46914 ovnhoilem1 46959 ovnlecvr2 46968 opnvonmbllem1 46990 vonioo 47040 vonicc 47043 sssmf 47096 smflim 47135 smfpimcclem 47165 smfpimcc 47166 cfsetsnfsetf 47418 ovmpordxf 48699 |
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