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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > iunmapss | Structured version Visualization version GIF version |
Description: The indexed union of set exponentiations is a subset of the set exponentiation of the indexed union. (Contributed by Glauco Siliprandi, 3-Mar-2021.) |
Ref | Expression |
---|---|
iunmapss.x | ⊢ Ⅎ𝑥𝜑 |
iunmapss.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
iunmapss.b | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊) |
Ref | Expression |
---|---|
iunmapss | ⊢ (𝜑 → ∪ 𝑥 ∈ 𝐴 (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iunmapss.x | . . 3 ⊢ Ⅎ𝑥𝜑 | |
2 | iunmapss.a | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
3 | iunmapss.b | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊) | |
4 | 3 | ex 412 | . . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ 𝐴 → 𝐵 ∈ 𝑊)) |
5 | 1, 4 | ralrimi 3255 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊) |
6 | iunexg 7987 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊) → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) | |
7 | 2, 5, 6 | syl2anc 584 | . . . . . 6 ⊢ (𝜑 → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) |
8 | 7 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) |
9 | ssiun2 5052 | . . . . . 6 ⊢ (𝑥 ∈ 𝐴 → 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) | |
10 | 9 | adantl 481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) |
11 | mapss 8928 | . . . . 5 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ∈ V ∧ 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) → (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) | |
12 | 8, 10, 11 | syl2anc 584 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) |
13 | 12 | ex 412 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 → (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶))) |
14 | 1, 13 | ralrimi 3255 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) |
15 | nfiu1 5032 | . . . 4 ⊢ Ⅎ𝑥∪ 𝑥 ∈ 𝐴 𝐵 | |
16 | nfcv 2903 | . . . 4 ⊢ Ⅎ𝑥 ↑m | |
17 | nfcv 2903 | . . . 4 ⊢ Ⅎ𝑥𝐶 | |
18 | 15, 16, 17 | nfov 7461 | . . 3 ⊢ Ⅎ𝑥(∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶) |
19 | 18 | iunssf 5049 | . 2 ⊢ (∪ 𝑥 ∈ 𝐴 (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶) ↔ ∀𝑥 ∈ 𝐴 (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) |
20 | 14, 19 | sylibr 234 | 1 ⊢ (𝜑 → ∪ 𝑥 ∈ 𝐴 (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 Ⅎwnf 1780 ∈ wcel 2106 ∀wral 3059 Vcvv 3478 ⊆ wss 3963 ∪ ciun 4996 (class class class)co 7431 ↑m cmap 8865 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-rep 5285 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ral 3060 df-rex 3069 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5583 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-fv 6571 df-ov 7434 df-oprab 7435 df-mpo 7436 df-1st 8013 df-2nd 8014 df-map 8867 |
This theorem is referenced by: iunmapsn 45160 |
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