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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 2932 | . 2 ⊢ (⊤ → Ⅎ𝑥 𝐴 = 𝐵) |
| 6 | 5 | mptru 1577 | 1 ⊢ Ⅎ𝑥 𝐴 = 𝐵 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ⊤wtru 1571 Ⅎwnf 1816 Ⅎwnfc 2907 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-tru 1573 df-ex 1813 df-nf 1817 df-cleq 2752 df-nfc 2909 |
| This theorem is used by: nfeq1 2937 nfeq2 2939 nfne 3058 raleqf 3341 rmoeq1f 3402 rabeqf 3445 csbhypf 3875 sbceqg 4370 nffn 6631 nffo 6788 fvmptd3f 7002 mpteqb 7006 fvmptf 7008 eqfnfv2f 7026 dff13f 7252 ovmpos 7561 ov2gf 7562 ovmpodxf 7563 ovmpodf 7569 eqerlem 8732 seqof2 14124 sumeq2ii 15780 sumss 15810 fsumadd 15826 fsummulc2 15870 fsumrelem 15894 prodeq1f 15995 prodeq2ii 16000 fprodmul 16047 fproddiv 16048 txcnp 23846 ptcnplem 23847 cnmpt11 23889 cnmpt21 23897 cnmptcom 23904 mbfeqalem1 25869 mbflim 25896 itgeq1f 25999 itgeqa 26041 dvmptfsum 26202 ulmss 26633 leibpi 27179 o1cxp 27211 lgseisenlem2 27612 nosupbnd1 27950 2ndresdju 33122 aciunf1lem 33135 deg1prod 33993 sigapildsys 34673 bnj1316 35329 bnj1446 35554 bnj1447 35555 bnj1448 35556 bnj1519 35574 bnj1520 35575 bnj1529 35579 subtr 36933 subtr2 36934 bj-sbeqALT 37643 poimirlem25 38394 iuneq2f 38904 mpobi123f 38910 mptbi12f 38914 dvdsrabdioph 43651 fphpd 43657 mnringmulrcld 45066 fvelrnbf 45852 refsum2cnlem1 45871 elrnmpt1sf 46021 choicefi 46031 axccdom 46052 uzublem 46258 fsumf1of 46404 fmuldfeq 46413 mccl 46428 climmulf 46434 climexp 46435 climsuse 46438 climrecf 46439 climaddf 46445 mullimc 46446 neglimc 46475 addlimc 46476 0ellimcdiv 46477 climeldmeqmpt 46496 climfveqmpt 46499 climfveqf 46508 climfveqmpt3 46510 climeldmeqf 46511 climeqf 46516 climeldmeqmpt3 46517 limsupubuzlem 46540 limsupequz 46551 dvnmptdivc 46766 dvmptfprod 46773 stoweidlem18 46846 stoweidlem31 46859 stoweidlem55 46883 stoweidlem59 46887 sge0iunmpt 47246 sge0reuz 47275 iundjiun 47288 hoicvrrex 47384 ovnhoilem1 47429 ovnlecvr2 47438 opnvonmbllem1 47460 vonioo 47510 vonicc 47513 smflim 47605 smfpimcclem 47635 smfpimcc 47636 cfsetsnfsetf 47946 ovmpordxf 49269 |
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