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Mirrors > Home > MPE Home > Th. List > feq23d | Structured version Visualization version GIF version |
Description: Equality deduction for functions. (Contributed by NM, 8-Jun-2013.) |
Ref | Expression |
---|---|
feq23d.1 | ⊢ (𝜑 → 𝐴 = 𝐶) |
feq23d.2 | ⊢ (𝜑 → 𝐵 = 𝐷) |
Ref | Expression |
---|---|
feq23d | ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐶⟶𝐷)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqidd 2799 | . 2 ⊢ (𝜑 → 𝐹 = 𝐹) | |
2 | feq23d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
3 | feq23d.2 | . 2 ⊢ (𝜑 → 𝐵 = 𝐷) | |
4 | 1, 2, 3 | feq123d 6476 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐶⟶𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 = wceq 1538 ⟶wf 6320 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-br 5031 df-opab 5093 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-fun 6326 df-fn 6327 df-f 6328 |
This theorem is referenced by: nvof1o 7015 axdc4uz 13347 isacs 16914 isfunc 17126 funcres 17158 funcpropd 17162 estrcco 17372 funcestrcsetclem9 17390 fullestrcsetc 17393 fullsetcestrc 17408 1stfcl 17439 2ndfcl 17440 evlfcl 17464 curf1cl 17470 yonedalem3b 17521 intopsn 17856 mhmpropd 17954 pwssplit1 19824 islindf 20501 evls1sca 20947 rrxds 23997 wlkp1 27471 acunirnmpt 30422 fnpreimac 30434 pwrssmgc 30706 cnmbfm 31631 elmrsubrn 32880 poimirlem3 35060 poimirlem28 35085 isrngod 35336 rngosn3 35362 isgrpda 35393 islfld 36358 tendofset 38054 tendoset 38055 mapfzcons 39657 diophrw 39700 refsum2cnlem1 41666 mgmhmpropd 44405 funcringcsetcALTV2lem9 44668 funcringcsetclem9ALTV 44691 aacllem 45329 |
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