| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 2737 | . 2 ⊢ (𝜑 → 𝐹 = 𝐹) | |
| 2 | feq23d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
| 3 | feq23d.2 | . 2 ⊢ (𝜑 → 𝐵 = 𝐷) | |
| 4 | 1, 2, 3 | feq123d 6651 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ↔ 𝐹:𝐶⟶𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ⟶wf 6488 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: nvof1o 7226 axdc4uz 13907 isacs 17574 isfunc 17788 funcres 17820 funcpropd 17826 estrcco 18053 funcestrcsetclem9 18071 fullestrcsetc 18074 fullsetcestrc 18089 1stfcl 18120 2ndfcl 18121 evlfcl 18145 curf1cl 18151 yonedalem3b 18202 intopsn 18579 mgmhmpropd 18623 mhmpropd 18717 isghm 19144 pwssplit1 21011 islindf 21767 evls1sca 22267 rrxds 25349 wlkp1 29753 acunirnmpt 32737 fnpreimac 32749 pwrssmgc 33082 cnmbfm 34420 elmrsubrn 35714 poimirlem3 37824 poimirlem28 37849 isrngod 38099 rngosn3 38125 isgrpda 38156 islfld 39322 tendofset 41018 tendoset 41019 sn-isghm 42916 mapfzcons 42958 diophrw 43001 refsum2cnlem1 45282 funcringcsetcALTV2lem9 48544 funcringcsetclem9ALTV 48567 termcfuncval 49777 aacllem 50046 |
| Copyright terms: Public domain | W3C validator |