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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 2907 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1548 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ⊤wtru 1542 Ⅎwnf 1784 Ⅎwnfc 2881 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-tru 1544 df-ex 1781 df-nf 1785 df-cleq 2726 df-nfc 2883 |
| This theorem is referenced by: nfeq1 2912 nfeq2 2914 nfne 3031 raleqf 3323 rexeqfOLD 3325 rmoeq1f 3387 rabeqf 3431 csbhypf 3875 sbceqg 4362 nffn 6589 nffo 6743 fvmptd3f 6954 mpteqb 6958 fvmptf 6960 eqfnfv2f 6978 dff13f 7199 ovmpos 7504 ov2gf 7505 ovmpodxf 7506 ovmpodf 7512 eqerlem 8668 seqof2 13981 sumeq2ii 15614 sumss 15645 fsumadd 15661 fsummulc2 15705 fsumrelem 15728 prodeq1f 15827 prodeq2ii 15832 fprodmul 15881 fproddiv 15882 txcnp 23562 ptcnplem 23563 cnmpt11 23605 cnmpt21 23613 cnmptcom 23620 mbfeqalem1 25596 mbflim 25623 itgeq1f 25726 itgeq1fOLD 25727 itgeqa 25769 dvmptfsum 25933 ulmss 26360 leibpi 26906 o1cxp 26939 lgseisenlem2 27341 nosupbnd1 27680 2ndresdju 32676 aciunf1lem 32689 deg1prod 33613 sigapildsys 34268 bnj1316 34925 bnj1446 35150 bnj1447 35151 bnj1448 35152 bnj1519 35170 bnj1520 35171 bnj1529 35175 subtr 36457 subtr2 36458 bj-sbeqALT 37044 poimirlem25 37785 iuneq2f 38296 mpobi123f 38302 mptbi12f 38306 dvdsrabdioph 42994 fphpd 43000 mnringmulrcld 44411 fvelrnbf 45205 refsum2cnlem1 45224 elrnmpt1sf 45375 choicefi 45386 axccdom 45408 uzublem 45616 fsumf1of 45762 fmuldfeq 45771 mccl 45786 climmulf 45792 climexp 45793 climsuse 45796 climrecf 45797 climaddf 45803 mullimc 45804 neglimc 45833 addlimc 45834 0ellimcdiv 45835 climeldmeqmpt 45854 climfveqmpt 45857 climfveqf 45866 climfveqmpt3 45868 climeldmeqf 45869 climeqf 45874 climeldmeqmpt3 45875 limsupubuzlem 45898 limsupequz 45909 dvnmptdivc 46124 dvmptfprod 46131 stoweidlem18 46204 stoweidlem31 46217 stoweidlem55 46241 stoweidlem59 46245 sge0iunmpt 46604 sge0reuz 46633 iundjiun 46646 hoicvrrex 46742 ovnhoilem1 46787 ovnlecvr2 46796 opnvonmbllem1 46818 vonioo 46868 vonicc 46871 sssmf 46924 smflim 46963 smfpimcclem 46993 smfpimcc 46994 cfsetsnfsetf 47246 ovmpordxf 48527 |
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