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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 2824 | . 2 ⊢ (𝜑 → 𝐹 = 𝐹) | |
2 | feq23d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
3 | feq23d.2 | . 2 ⊢ (𝜑 → 𝐵 = 𝐷) | |
4 | 1, 2, 3 | feq123d 6505 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐶⟶𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 = wceq 1537 ⟶wf 6353 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-rab 3149 df-v 3498 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-op 4576 df-br 5069 df-opab 5131 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-fun 6359 df-fn 6360 df-f 6361 |
This theorem is referenced by: nvof1o 7039 axdc4uz 13355 isacs 16924 isfunc 17136 funcres 17168 funcpropd 17172 estrcco 17382 funcestrcsetclem9 17400 fullestrcsetc 17403 fullsetcestrc 17418 1stfcl 17449 2ndfcl 17450 evlfcl 17474 curf1cl 17480 yonedalem3b 17531 intopsn 17866 mhmpropd 17964 pwssplit1 19833 evls1sca 20488 islindf 20958 rrxds 23998 wlkp1 27465 acunirnmpt 30406 fnpreimac 30418 cnmbfm 31523 elmrsubrn 32769 poimirlem3 34897 poimirlem28 34922 isrngod 35178 rngosn3 35204 isgrpda 35235 islfld 36200 tendofset 37896 tendoset 37897 mapfzcons 39320 diophrw 39363 refsum2cnlem1 41301 mgmhmpropd 44059 funcringcsetcALTV2lem9 44322 funcringcsetclem9ALTV 44345 aacllem 44909 |
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