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 450 | . . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ 𝐴 → 𝐵 ∈ 𝑊)) |
5 | 1, 4 | ralrimi 2957 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊) |
6 | iunexg 7143 | . . . . . . 7 ⊢ ((𝐴 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊) → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) | |
7 | 2, 5, 6 | syl2anc 693 | . . . . . 6 ⊢ (𝜑 → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) |
8 | 7 | adantr 481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) |
9 | ssiun2 4563 | . . . . . 6 ⊢ (𝑥 ∈ 𝐴 → 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) | |
10 | 9 | adantl 482 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) |
11 | mapss 7900 | . . . . 5 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ∈ V ∧ 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) → (𝐵 ↑𝑚 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐶)) | |
12 | 8, 10, 11 | syl2anc 693 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 ↑𝑚 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐶)) |
13 | 12 | ex 450 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 → (𝐵 ↑𝑚 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐶))) |
14 | 1, 13 | ralrimi 2957 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 (𝐵 ↑𝑚 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐶)) |
15 | nfiu1 4550 | . . . 4 ⊢ Ⅎ𝑥∪ 𝑥 ∈ 𝐴 𝐵 | |
16 | nfcv 2764 | . . . 4 ⊢ Ⅎ𝑥 ↑𝑚 | |
17 | nfcv 2764 | . . . 4 ⊢ Ⅎ𝑥𝐶 | |
18 | 15, 16, 17 | nfov 6676 | . . 3 ⊢ Ⅎ𝑥(∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐶) |
19 | 18 | iunssf 39263 | . 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 224 | 1 ⊢ (𝜑 → ∪ 𝑥 ∈ 𝐴 (𝐵 ↑𝑚 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑𝑚 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 Ⅎwnf 1708 ∈ wcel 1990 ∀wral 2912 Vcvv 3200 ⊆ wss 3574 ∪ ciun 4520 (class class class)co 6650 ↑𝑚 cmap 7857 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-1st 7168 df-2nd 7169 df-map 7859 |
This theorem is referenced by: iunmapsn 39409 |
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