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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 2937 | . 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 2912 |
| 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 1943 ax-6 2000 ax-7 2041 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 |
| 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 2757 df-nfc 2914 |
| This theorem is used by: nfeq1 2942 nfeq2 2944 nfne 3063 raleqf 3347 rmoeq1f 3408 rabeqf 3452 csbhypf 3882 sbceqg 4377 nffn 6638 nffo 6795 fvmptd3f 7009 mpteqb 7013 fvmptf 7015 eqfnfv2f 7033 dff13f 7258 ovmpos 7567 ov2gf 7568 ovmpodxf 7569 ovmpodf 7575 eqerlem 8736 seqof2 14114 sumeq2ii 15768 sumss 15798 fsumadd 15814 fsummulc2 15858 fsumrelem 15882 prodeq1f 15983 prodeq2ii 15988 fprodmul 16037 fproddiv 16038 txcnp 23828 ptcnplem 23829 cnmpt11 23871 cnmpt21 23879 cnmptcom 23886 mbfeqalem1 25851 mbflim 25878 itgeq1f 25981 itgeq1fOLD 25982 itgeqa 26024 dvmptfsum 26185 ulmss 26611 leibpi 27158 o1cxp 27190 lgseisenlem2 27591 nosupbnd1 27929 2ndresdju 33065 aciunf1lem 33078 deg1prod 33937 sigapildsys 34617 bnj1316 35273 bnj1446 35498 bnj1447 35499 bnj1448 35500 bnj1519 35518 bnj1520 35519 bnj1529 35523 subtr 36882 subtr2 36883 bj-sbeqALT 37592 poimirlem25 38353 iuneq2f 38863 mpobi123f 38869 mptbi12f 38873 dvdsrabdioph 43595 fphpd 43601 mnringmulrcld 45010 fvelrnbf 45796 refsum2cnlem1 45815 elrnmpt1sf 45965 choicefi 45975 axccdom 45996 uzublem 46202 fsumf1of 46348 fmuldfeq 46357 mccl 46372 climmulf 46378 climexp 46379 climsuse 46382 climrecf 46383 climaddf 46389 mullimc 46390 neglimc 46419 addlimc 46420 0ellimcdiv 46421 climeldmeqmpt 46440 climfveqmpt 46443 climfveqf 46452 climfveqmpt3 46454 climeldmeqf 46455 climeqf 46460 climeldmeqmpt3 46461 limsupubuzlem 46484 limsupequz 46495 dvnmptdivc 46710 dvmptfprod 46717 stoweidlem18 46790 stoweidlem31 46803 stoweidlem55 46827 stoweidlem59 46831 sge0iunmpt 47190 sge0reuz 47219 iundjiun 47232 hoicvrrex 47328 ovnhoilem1 47373 ovnlecvr2 47382 opnvonmbllem1 47404 vonioo 47454 vonicc 47457 smflim 47549 smfpimcclem 47579 smfpimcc 47580 cfsetsnfsetf 47853 ovmpordxf 49176 |
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