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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 2932 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1576 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ⊤wtru 1570 Ⅎwnf 1815 Ⅎwnfc 2907 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-tru 1572 df-ex 1812 df-nf 1816 df-cleq 2752 df-nfc 2909 |
| This theorem is used by: nfeq1 2937 nfeq2 2939 nfne 3058 raleqf 3341 rmoeq1f 3402 rabeqf 3445 csbhypf 3875 sbceqg 4369 nffn 6643 nffo 6800 fvmptd3f 7014 mpteqb 7018 fvmptf 7020 eqfnfv2f 7038 dff13f 7263 ovmpos 7572 ov2gf 7573 ovmpodxf 7574 ovmpodf 7580 eqerlem 8760 seqof2 14210 sumeq2ii 15869 sumss 15899 fsumadd 15915 fsummulc2 15959 fsumrelem 15983 prodeq1f 16084 prodeq2ii 16089 fprodmul 16136 fproddiv 16137 txcnp 23948 ptcnplem 23949 cnmpt11 23991 cnmpt21 23999 cnmptcom 24006 mbfeqalem1 25971 mbflim 25998 itgeq1f 26101 itgeqa 26143 dvmptfsum 26304 ulmss 26733 leibpi 27279 o1cxp 27311 lgseisenlem2 27712 nosupbnd1 28080 2ndresdju 33294 aciunf1lem 33307 deg1prod 34165 sigapildsys 34845 bnj1316 35500 bnj1446 35725 bnj1447 35726 bnj1448 35727 bnj1519 35745 bnj1520 35746 bnj1529 35750 subtr 37198 subtr2 37199 bj-sbeqALT 37908 poimirlem25 38672 iuneq2f 39197 mpobi123f 39203 mptbi12f 39207 dvdsrabdioph 43926 fphpd 43932 mnringmulrcld 45335 fvelrnbf 46143 refsum2cnlem1 46162 elrnmpt1sf 46312 choicefi 46322 axccdom 46343 uzublem 46548 fsumf1of 46694 fmuldfeq 46703 mccl 46718 climmulf 46724 climexp 46725 climsuse 46728 climrecf 46729 climaddf 46735 mullimc 46736 neglimc 46765 addlimc 46766 0ellimcdiv 46767 climeldmeqmpt 46786 climfveqmpt 46789 climfveqf 46798 climfveqmpt3 46800 climeldmeqf 46801 climeqf 46806 climeldmeqmpt3 46807 limsupubuzlem 46830 limsupequz 46841 dvnmptdivc 47056 dvmptfprod 47063 stoweidlem18 47136 stoweidlem31 47149 stoweidlem55 47173 stoweidlem59 47177 sge0iunmpt 47536 sge0reuz 47565 iundjiun 47578 hoicvrrex 47674 ovnhoilem1 47719 ovnlecvr2 47728 opnvonmbllem1 47750 vonioo 47800 vonicc 47803 smflim 47895 smfpimcclem 47925 smfpimcc 47926 cfsetsnfsetf 48236 ovmpordxf 49559 |
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