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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 2909 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1549 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ⊤wtru 1543 Ⅎwnf 1785 Ⅎwnfc 2883 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-tru 1545 df-ex 1782 df-nf 1786 df-cleq 2728 df-nfc 2885 |
| This theorem is referenced by: nfeq1 2914 nfeq2 2916 nfne 3033 raleqf 3318 rmoeq1f 3379 rabeqf 3423 csbhypf 3865 sbceqg 4352 nffn 6597 nffo 6751 fvmptd3f 6963 mpteqb 6967 fvmptf 6969 eqfnfv2f 6987 dff13f 7210 ovmpos 7515 ov2gf 7516 ovmpodxf 7517 ovmpodf 7523 eqerlem 8679 seqof2 14022 sumeq2ii 15655 sumss 15686 fsumadd 15702 fsummulc2 15746 fsumrelem 15770 prodeq1f 15871 prodeq2ii 15876 fprodmul 15925 fproddiv 15926 txcnp 23585 ptcnplem 23586 cnmpt11 23628 cnmpt21 23636 cnmptcom 23643 mbfeqalem1 25608 mbflim 25635 itgeq1f 25738 itgeq1fOLD 25739 itgeqa 25781 dvmptfsum 25942 ulmss 26362 leibpi 26906 o1cxp 26938 lgseisenlem2 27339 nosupbnd1 27678 2ndresdju 32722 aciunf1lem 32735 deg1prod 33643 sigapildsys 34306 bnj1316 34962 bnj1446 35187 bnj1447 35188 bnj1448 35189 bnj1519 35207 bnj1520 35208 bnj1529 35212 subtr 36496 subtr2 36497 bj-sbeqALT 37207 poimirlem25 37966 iuneq2f 38477 mpobi123f 38483 mptbi12f 38487 dvdsrabdioph 43238 fphpd 43244 mnringmulrcld 44655 fvelrnbf 45449 refsum2cnlem1 45468 elrnmpt1sf 45619 choicefi 45629 axccdom 45651 uzublem 45858 fsumf1of 46004 fmuldfeq 46013 mccl 46028 climmulf 46034 climexp 46035 climsuse 46038 climrecf 46039 climaddf 46045 mullimc 46046 neglimc 46075 addlimc 46076 0ellimcdiv 46077 climeldmeqmpt 46096 climfveqmpt 46099 climfveqf 46108 climfveqmpt3 46110 climeldmeqf 46111 climeqf 46116 climeldmeqmpt3 46117 limsupubuzlem 46140 limsupequz 46151 dvnmptdivc 46366 dvmptfprod 46373 stoweidlem18 46446 stoweidlem31 46459 stoweidlem55 46483 stoweidlem59 46487 sge0iunmpt 46846 sge0reuz 46875 iundjiun 46888 hoicvrrex 46984 ovnhoilem1 47029 ovnlecvr2 47038 opnvonmbllem1 47060 vonioo 47110 vonicc 47113 sssmf 47166 smflim 47205 smfpimcclem 47235 smfpimcc 47236 cfsetsnfsetf 47506 ovmpordxf 48815 |
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