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Mirrors > Home > MPE Home > Th. List > pwdjuen | Structured version Visualization version GIF version |
Description: Sum of exponents law for cardinal arithmetic. (Contributed by Mario Carneiro, 15-May-2015.) |
Ref | Expression |
---|---|
pwdjuen | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝒫 (𝐴 ⊔ 𝐵) ≈ (𝒫 𝐴 × 𝒫 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | djuex 9597 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ⊔ 𝐵) ∈ V) | |
2 | pw2eng 8818 | . . 3 ⊢ ((𝐴 ⊔ 𝐵) ∈ V → 𝒫 (𝐴 ⊔ 𝐵) ≈ (2o ↑m (𝐴 ⊔ 𝐵))) | |
3 | 1, 2 | syl 17 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝒫 (𝐴 ⊔ 𝐵) ≈ (2o ↑m (𝐴 ⊔ 𝐵))) |
4 | 2on 8275 | . . . 4 ⊢ 2o ∈ On | |
5 | mapdjuen 9867 | . . . 4 ⊢ ((2o ∈ On ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (2o ↑m (𝐴 ⊔ 𝐵)) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵))) | |
6 | 4, 5 | mp3an1 1446 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (2o ↑m (𝐴 ⊔ 𝐵)) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵))) |
7 | pw2eng 8818 | . . . . 5 ⊢ (𝐴 ∈ 𝑉 → 𝒫 𝐴 ≈ (2o ↑m 𝐴)) | |
8 | pw2eng 8818 | . . . . 5 ⊢ (𝐵 ∈ 𝑊 → 𝒫 𝐵 ≈ (2o ↑m 𝐵)) | |
9 | xpen 8876 | . . . . 5 ⊢ ((𝒫 𝐴 ≈ (2o ↑m 𝐴) ∧ 𝒫 𝐵 ≈ (2o ↑m 𝐵)) → (𝒫 𝐴 × 𝒫 𝐵) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵))) | |
10 | 7, 8, 9 | syl2an 595 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝒫 𝐴 × 𝒫 𝐵) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵))) |
11 | enen2 8854 | . . . 4 ⊢ ((𝒫 𝐴 × 𝒫 𝐵) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵)) → ((2o ↑m (𝐴 ⊔ 𝐵)) ≈ (𝒫 𝐴 × 𝒫 𝐵) ↔ (2o ↑m (𝐴 ⊔ 𝐵)) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵)))) | |
12 | 10, 11 | syl 17 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ((2o ↑m (𝐴 ⊔ 𝐵)) ≈ (𝒫 𝐴 × 𝒫 𝐵) ↔ (2o ↑m (𝐴 ⊔ 𝐵)) ≈ ((2o ↑m 𝐴) × (2o ↑m 𝐵)))) |
13 | 6, 12 | mpbird 256 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (2o ↑m (𝐴 ⊔ 𝐵)) ≈ (𝒫 𝐴 × 𝒫 𝐵)) |
14 | entr 8747 | . 2 ⊢ ((𝒫 (𝐴 ⊔ 𝐵) ≈ (2o ↑m (𝐴 ⊔ 𝐵)) ∧ (2o ↑m (𝐴 ⊔ 𝐵)) ≈ (𝒫 𝐴 × 𝒫 𝐵)) → 𝒫 (𝐴 ⊔ 𝐵) ≈ (𝒫 𝐴 × 𝒫 𝐵)) | |
15 | 3, 13, 14 | syl2anc 583 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 𝒫 (𝐴 ⊔ 𝐵) ≈ (𝒫 𝐴 × 𝒫 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∈ wcel 2108 Vcvv 3422 𝒫 cpw 4530 class class class wbr 5070 × cxp 5578 Oncon0 6251 (class class class)co 7255 2oc2o 8261 ↑m cmap 8573 ≈ cen 8688 ⊔ cdju 9587 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-ord 6254 df-on 6255 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-oprab 7259 df-mpo 7260 df-1st 7804 df-2nd 7805 df-1o 8267 df-2o 8268 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-dju 9590 |
This theorem is referenced by: pwdju1 9877 pwdjudom 9903 canthp1lem1 10339 gchxpidm 10356 gchhar 10366 |
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