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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 2902 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1547 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ⊤wtru 1541 Ⅎwnf 1783 Ⅎwnfc 2876 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-tru 1543 df-ex 1780 df-nf 1784 df-cleq 2721 df-nfc 2878 |
| This theorem is referenced by: nfeq1 2907 nfeq2 2909 nfne 3026 raleqf 3318 rexeqfOLD 3320 rmoeq1f 3384 rabeqf 3429 csbhypf 3879 sbceqg 4363 nffn 6581 nffo 6735 fvmptd3f 6945 mpteqb 6949 fvmptf 6951 eqfnfv2f 6969 dff13f 7192 ovmpos 7497 ov2gf 7498 ovmpodxf 7499 ovmpodf 7505 eqerlem 8660 seqof2 13967 sumeq2ii 15600 sumss 15631 fsumadd 15647 fsummulc2 15691 fsumrelem 15714 prodeq1f 15813 prodeq2ii 15818 fprodmul 15867 fproddiv 15868 txcnp 23505 ptcnplem 23506 cnmpt11 23548 cnmpt21 23556 cnmptcom 23563 mbfeqalem1 25540 mbflim 25567 itgeq1f 25670 itgeq1fOLD 25671 itgeqa 25713 dvmptfsum 25877 ulmss 26304 leibpi 26850 o1cxp 26883 lgseisenlem2 27285 nosupbnd1 27624 2ndresdju 32600 aciunf1lem 32613 sigapildsys 34145 bnj1316 34803 bnj1446 35028 bnj1447 35029 bnj1448 35030 bnj1519 35048 bnj1520 35049 bnj1529 35053 subtr 36308 subtr2 36309 bj-sbeqALT 36894 poimirlem25 37645 iuneq2f 38156 mpobi123f 38162 mptbi12f 38166 dvdsrabdioph 42803 fphpd 42809 mnringmulrcld 44221 fvelrnbf 45016 refsum2cnlem1 45035 elrnmpt1sf 45187 choicefi 45198 axccdom 45220 uzublem 45429 fsumf1of 45575 fmuldfeq 45584 mccl 45599 climmulf 45605 climexp 45606 climsuse 45609 climrecf 45610 climaddf 45616 mullimc 45617 neglimc 45648 addlimc 45649 0ellimcdiv 45650 climeldmeqmpt 45669 climfveqmpt 45672 climfveqf 45681 climfveqmpt3 45683 climeldmeqf 45684 climeqf 45689 climeldmeqmpt3 45690 limsupubuzlem 45713 limsupequz 45724 dvnmptdivc 45939 dvmptfprod 45946 stoweidlem18 46019 stoweidlem31 46032 stoweidlem55 46056 stoweidlem59 46060 sge0iunmpt 46419 sge0reuz 46448 iundjiun 46461 hoicvrrex 46557 ovnhoilem1 46602 ovnlecvr2 46611 opnvonmbllem1 46633 vonioo 46683 vonicc 46686 sssmf 46739 smflim 46778 smfpimcclem 46808 smfpimcc 46809 cfsetsnfsetf 47062 ovmpordxf 48343 |
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