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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 1548 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ⊤wtru 1542 Ⅎwnf 1784 Ⅎwnfc 2883 |
| 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 2184 ax-ext 2708 |
| 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 2728 df-nfc 2885 |
| This theorem is referenced by: nfeq1 2914 nfeq2 2916 nfne 3033 raleqf 3325 rexeqfOLD 3327 rmoeq1f 3389 rabeqf 3433 csbhypf 3877 sbceqg 4364 nffn 6591 nffo 6745 fvmptd3f 6956 mpteqb 6960 fvmptf 6962 eqfnfv2f 6980 dff13f 7201 ovmpos 7506 ov2gf 7507 ovmpodxf 7508 ovmpodf 7514 eqerlem 8670 seqof2 13983 sumeq2ii 15616 sumss 15647 fsumadd 15663 fsummulc2 15707 fsumrelem 15730 prodeq1f 15829 prodeq2ii 15834 fprodmul 15883 fproddiv 15884 txcnp 23564 ptcnplem 23565 cnmpt11 23607 cnmpt21 23615 cnmptcom 23622 mbfeqalem1 25598 mbflim 25625 itgeq1f 25728 itgeq1fOLD 25729 itgeqa 25771 dvmptfsum 25935 ulmss 26362 leibpi 26908 o1cxp 26941 lgseisenlem2 27343 nosupbnd1 27682 2ndresdju 32727 aciunf1lem 32740 deg1prod 33664 sigapildsys 34319 bnj1316 34976 bnj1446 35201 bnj1447 35202 bnj1448 35203 bnj1519 35221 bnj1520 35222 bnj1529 35226 subtr 36508 subtr2 36509 bj-sbeqALT 37101 poimirlem25 37846 iuneq2f 38357 mpobi123f 38363 mptbi12f 38367 dvdsrabdioph 43052 fphpd 43058 mnringmulrcld 44469 fvelrnbf 45263 refsum2cnlem1 45282 elrnmpt1sf 45433 choicefi 45444 axccdom 45466 uzublem 45674 fsumf1of 45820 fmuldfeq 45829 mccl 45844 climmulf 45850 climexp 45851 climsuse 45854 climrecf 45855 climaddf 45861 mullimc 45862 neglimc 45891 addlimc 45892 0ellimcdiv 45893 climeldmeqmpt 45912 climfveqmpt 45915 climfveqf 45924 climfveqmpt3 45926 climeldmeqf 45927 climeqf 45932 climeldmeqmpt3 45933 limsupubuzlem 45956 limsupequz 45967 dvnmptdivc 46182 dvmptfprod 46189 stoweidlem18 46262 stoweidlem31 46275 stoweidlem55 46299 stoweidlem59 46303 sge0iunmpt 46662 sge0reuz 46691 iundjiun 46704 hoicvrrex 46800 ovnhoilem1 46845 ovnlecvr2 46854 opnvonmbllem1 46876 vonioo 46926 vonicc 46929 sssmf 46982 smflim 47021 smfpimcclem 47051 smfpimcc 47052 cfsetsnfsetf 47304 ovmpordxf 48585 |
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