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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 2933 | . 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 2908 |
| 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 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 |
| 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 2753 df-nfc 2910 |
| This theorem is used by: nfeq1 2938 nfeq2 2940 nfne 3059 raleqf 3342 rmoeq1f 3403 rabeqf 3446 csbhypf 3875 sbceqg 4370 nffn 6636 nffo 6793 fvmptd3f 7007 mpteqb 7011 fvmptf 7013 eqfnfv2f 7031 dff13f 7257 ovmpos 7566 ov2gf 7567 ovmpodxf 7568 ovmpodf 7574 eqerlem 8746 seqof2 14196 sumeq2ii 15853 sumss 15883 fsumadd 15899 fsummulc2 15943 fsumrelem 15967 prodeq1f 16068 prodeq2ii 16073 fprodmul 16120 fproddiv 16121 txcnp 23932 ptcnplem 23933 cnmpt11 23975 cnmpt21 23983 cnmptcom 23990 mbfeqalem1 25955 mbflim 25982 itgeq1f 26085 itgeqa 26127 dvmptfsum 26288 ulmss 26717 leibpi 27263 o1cxp 27295 lgseisenlem2 27696 nosupbnd1 28064 2ndresdju 33236 aciunf1lem 33249 deg1prod 34108 sigapildsys 34788 bnj1316 35443 bnj1446 35668 bnj1447 35669 bnj1448 35670 bnj1519 35688 bnj1520 35689 bnj1529 35693 subtr 37082 subtr2 37083 bj-sbeqALT 37792 poimirlem25 38543 iuneq2f 39068 mpobi123f 39074 mptbi12f 39078 dvdsrabdioph 43796 fphpd 43802 mnringmulrcld 45211 fvelrnbf 46004 refsum2cnlem1 46023 elrnmpt1sf 46173 choicefi 46183 axccdom 46204 uzublem 46409 fsumf1of 46555 fmuldfeq 46564 mccl 46579 climmulf 46585 climexp 46586 climsuse 46589 climrecf 46590 climaddf 46596 mullimc 46597 neglimc 46626 addlimc 46627 0ellimcdiv 46628 climeldmeqmpt 46647 climfveqmpt 46650 climfveqf 46659 climfveqmpt3 46661 climeldmeqf 46662 climeqf 46667 climeldmeqmpt3 46668 limsupubuzlem 46691 limsupequz 46702 dvnmptdivc 46917 dvmptfprod 46924 stoweidlem18 46997 stoweidlem31 47010 stoweidlem55 47034 stoweidlem59 47038 sge0iunmpt 47397 sge0reuz 47426 iundjiun 47439 hoicvrrex 47535 ovnhoilem1 47580 ovnlecvr2 47589 opnvonmbllem1 47611 vonioo 47661 vonicc 47664 smflim 47756 smfpimcclem 47786 smfpimcc 47787 cfsetsnfsetf 48097 ovmpordxf 49420 |
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