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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 2911 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1554 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ⊤wtru 1548 Ⅎwnf 1790 Ⅎwnfc 2886 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-tru 1550 df-ex 1787 df-nf 1791 df-cleq 2731 df-nfc 2888 |
| This theorem is referenced by: nfeq1 2916 nfeq2 2918 nfne 3035 raleqf 3320 rmoeq1f 3381 rabeqf 3425 csbhypf 3859 sbceqg 4340 nffn 6584 nffo 6738 fvmptd3f 6951 mpteqb 6955 fvmptf 6957 eqfnfv2f 6975 dff13f 7199 ovmpos 7504 ov2gf 7505 ovmpodxf 7506 ovmpodf 7512 eqerlem 8669 seqof2 14013 sumeq2ii 15646 sumss 15677 fsumadd 15693 fsummulc2 15737 fsumrelem 15761 prodeq1f 15862 prodeq2ii 15867 fprodmul 15916 fproddiv 15917 txcnp 23603 ptcnplem 23604 cnmpt11 23646 cnmpt21 23654 cnmptcom 23661 mbfeqalem1 25626 mbflim 25653 itgeq1f 25756 itgeq1fOLD 25757 itgeqa 25799 dvmptfsum 25960 ulmss 26380 leibpi 26924 o1cxp 26956 lgseisenlem2 27357 nosupbnd1 27696 2ndresdju 32741 aciunf1lem 32754 deg1prod 33666 sigapildsys 34346 bnj1316 35002 bnj1446 35227 bnj1447 35228 bnj1448 35229 bnj1519 35247 bnj1520 35248 bnj1529 35252 subtr 36542 subtr2 36543 bj-sbeqALT 37253 poimirlem25 38012 iuneq2f 38523 mpobi123f 38529 mptbi12f 38533 dvdsrabdioph 43255 fphpd 43261 mnringmulrcld 44672 fvelrnbf 45466 refsum2cnlem1 45485 elrnmpt1sf 45636 choicefi 45646 axccdom 45667 uzublem 45873 fsumf1of 46019 fmuldfeq 46028 mccl 46043 climmulf 46049 climexp 46050 climsuse 46053 climrecf 46054 climaddf 46060 mullimc 46061 neglimc 46090 addlimc 46091 0ellimcdiv 46092 climeldmeqmpt 46111 climfveqmpt 46114 climfveqf 46123 climfveqmpt3 46125 climeldmeqf 46126 climeqf 46131 climeldmeqmpt3 46132 limsupubuzlem 46155 limsupequz 46166 dvnmptdivc 46381 dvmptfprod 46388 stoweidlem18 46461 stoweidlem31 46474 stoweidlem55 46498 stoweidlem59 46502 sge0iunmpt 46861 sge0reuz 46890 iundjiun 46903 hoicvrrex 46999 ovnhoilem1 47044 ovnlecvr2 47053 opnvonmbllem1 47075 vonioo 47125 vonicc 47128 sssmf 47181 smflim 47220 smfpimcclem 47250 smfpimcc 47251 cfsetsnfsetf 47521 ovmpordxf 48830 |
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