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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 2611 | . 2 ⊢ (𝜑 → 𝐹 = 𝐹) | |
2 | feq23d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
3 | feq23d.2 | . 2 ⊢ (𝜑 → 𝐵 = 𝐷) | |
4 | 1, 2, 3 | feq123d 5947 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐶⟶𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 = wceq 1475 ⟶wf 5800 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-rab 2905 df-v 3175 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-br 4584 df-opab 4644 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-fun 5806 df-fn 5807 df-f 5808 |
This theorem is referenced by: nvof1o 6436 axdc4uz 12645 isacs 16135 isfunc 16347 funcres 16379 funcpropd 16383 estrcco 16593 funcestrcsetclem9 16611 fullestrcsetc 16614 fullsetcestrc 16629 1stfcl 16660 2ndfcl 16661 evlfcl 16685 curf1cl 16691 yonedalem3b 16742 intopsn 17076 mhmpropd 17164 pwssplit1 18880 evls1sca 19509 islindf 19970 rrxds 22989 acunirnmpt 28841 cnmbfm 29652 elmrsubrn 30671 poimirlem3 32582 poimirlem28 32607 isrngod 32867 rngosn3 32893 isgrpda 32924 islfld 33367 tendofset 35064 tendoset 35065 mapfzcons 36297 diophrw 36340 refsum2cnlem1 38219 1wlkp1 40890 mgmhmpropd 41575 funcringcsetcALTV2lem9 41836 funcringcsetclem9ALTV 41859 aacllem 42356 |
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