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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 2822 | . 2 ⊢ (𝜑 → 𝐹 = 𝐹) | |
2 | feq23d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
3 | feq23d.2 | . 2 ⊢ (𝜑 → 𝐵 = 𝐷) | |
4 | 1, 2, 3 | feq123d 6497 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐶⟶𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1533 ⟶wf 6345 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-rab 3147 df-v 3496 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-sn 4561 df-pr 4563 df-op 4567 df-br 5059 df-opab 5121 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-rn 5560 df-fun 6351 df-fn 6352 df-f 6353 |
This theorem is referenced by: nvof1o 7031 axdc4uz 13346 isacs 16916 isfunc 17128 funcres 17160 funcpropd 17164 estrcco 17374 funcestrcsetclem9 17392 fullestrcsetc 17395 fullsetcestrc 17410 1stfcl 17441 2ndfcl 17442 evlfcl 17466 curf1cl 17472 yonedalem3b 17523 intopsn 17858 mhmpropd 17956 pwssplit1 19825 evls1sca 20480 islindf 20950 rrxds 23990 wlkp1 27457 acunirnmpt 30398 fnpreimac 30410 cnmbfm 31516 elmrsubrn 32762 poimirlem3 34889 poimirlem28 34914 isrngod 35170 rngosn3 35196 isgrpda 35227 islfld 36192 tendofset 37888 tendoset 37889 mapfzcons 39306 diophrw 39349 refsum2cnlem1 41287 mgmhmpropd 44046 funcringcsetcALTV2lem9 44309 funcringcsetclem9ALTV 44332 aacllem 44896 |
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