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Related theorems GIF version |
| Description: Membership relation for set exponentiation. |
| Ref | Expression |
|---|---|
| elmap.1 | ⊢ A ∈ V |
| elmap.2 | ⊢ B ∈ V |
| Ref | Expression |
|---|---|
| elmap | ⊢ (C ∈ (A ↑m B) ↔ C:B–→A) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elmap.1 | . . . 4 ⊢ A ∈ V | |
| 2 | elmap.2 | . . . 4 ⊢ B ∈ V | |
| 3 | 1, 2 | mapval 3264 | . . 3 ⊢ (A ↑m B) = {f∣f:B–→A} |
| 4 | 3 | eleq2i 1153 | . 2 ⊢ (C ∈ (A ↑m B) ↔ C ∈ {f∣f:B–→A}) |
| 5 | fex 2771 | . . . 4 ⊢ (B ∈ V → (C:B–→A → C ∈ V)) | |
| 6 | 2, 5 | ax-mp 6 | . . 3 ⊢ (C:B–→A → C ∈ V) |
| 7 | feq1 2748 | . . 3 ⊢ (f = C → (f:B–→A ↔ C:B–→A)) | |
| 8 | 6, 7 | elab3g 1420 | . 2 ⊢ (C ∈ {f∣f:B–→A} ↔ C:B–→A) |
| 9 | 4, 8 | bitr 151 | 1 ⊢ (C ∈ (A ↑m B) ↔ C:B–→A) |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ↔ wb 127 {cab 1090 ∈ wcel 1092 Vcvv 1348 –→wf 2418 (class class class)co 3001 ↑m cm 3258 |
| This theorem is referenced by: mapsn 3269 map1 3335 pw2en 3348 mapenlem1 3384 mapenlem2 3385 mapdom2lem 3388 mapdom2 3389 mapxpen 3390 xpmapenlem5 3395 mapunen 3397 infmap2lem2 4952 infmap2 4953 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-rex 1206 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-id 2125 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-fv 2438 df-opr 3003 df-oprab 3004 df-map 3259 |