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Related theorems GIF version |
| Description: Equinumerosity law for set exponentiation of a cross product. Exercise 4.47 of [Mendelson] p. 255. |
| Ref | Expression |
|---|---|
| xpmapen.1 | ⊢ A ∈ V |
| xpmapen.2 | ⊢ B ∈ V |
| xpmapen.3 | ⊢ C ∈ V |
| Ref | Expression |
|---|---|
| xpmapen | ⊢ ((A × B) ↑m C) ≈ ((A ↑m C) × (B ↑m C)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpmapen.1 | . 2 ⊢ A ∈ V | |
| 2 | xpmapen.2 | . 2 ⊢ B ∈ V | |
| 3 | xpmapen.3 | . 2 ⊢ C ∈ V | |
| 4 | cleqid 1102 | . 2 ⊢ {〈z, w〉∣(z ∈ C ∧ w = ∪dom {(x ‘z)})} = {〈z, w〉∣(z ∈ C ∧ w = ∪dom {(x ‘z)})} | |
| 5 | cleqid 1102 | . 2 ⊢ {〈z, w〉∣(z ∈ C ∧ w = ∪ran {(x ‘z)})} = {〈z, w〉∣(z ∈ C ∧ w = ∪ran {(x ‘z)})} | |
| 6 | cleqid 1102 | . 2 ⊢ {〈z, w〉∣(z ∈ C ∧ w = 〈(∪dom {y} ‘z), (∪ran {y} ‘z)〉)} = {〈z, w〉∣(z ∈ C ∧ w = 〈(∪dom {y} ‘z), (∪ran {y} ‘z)〉)} | |
| 7 | 1, 2, 3, 4, 5, 6 | xpmapenlem5 3395 | 1 ⊢ ((A × B) ↑m C) ≈ ((A ↑m C) × (B ↑m C)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 196 = wceq 1091 ∈ wcel 1092 Vcvv 1348 {csn 1808 〈cop 1810 ∪cuni 1919 class class class wbr 2054 {copab 2055 × cxp 2408 dom cdm 2410 ran crn 2411 ‘cfv 2422 (class class class)co 3001 ↑m cm 3258 ≈ cen 3271 |
| 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-ral 1205 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-f1 2435 df-fo 2436 df-f1o 2437 df-fv 2438 df-opr 3003 df-oprab 3004 df-map 3259 df-en 3274 |