| 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 3227 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊) |
| 6 | iunexg 7905 | . . . . . . 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 4999 | . . . . . 6 ⊢ (𝑥 ∈ 𝐴 → 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) | |
| 10 | 9 | adantl 481 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ⊆ ∪ 𝑥 ∈ 𝐴 𝐵) |
| 11 | mapss 8823 | . . . . 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 3227 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 (𝐵 ↑m 𝐶) ⊆ (∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶)) |
| 15 | nfiu1 4980 | . . . 4 ⊢ Ⅎ𝑥∪ 𝑥 ∈ 𝐴 𝐵 | |
| 16 | nfcv 2891 | . . . 4 ⊢ Ⅎ𝑥 ↑m | |
| 17 | nfcv 2891 | . . . 4 ⊢ Ⅎ𝑥𝐶 | |
| 18 | 15, 16, 17 | nfov 7383 | . . 3 ⊢ Ⅎ𝑥(∪ 𝑥 ∈ 𝐴 𝐵 ↑m 𝐶) |
| 19 | 18 | iunssf 4996 | . 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 1783 ∈ wcel 2109 ∀wral 3044 Vcvv 3438 ⊆ wss 3905 ∪ ciun 4944 (class class class)co 7353 ↑m cmap 8760 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ral 3045 df-rex 3054 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-fv 6494 df-ov 7356 df-oprab 7357 df-mpo 7358 df-1st 7931 df-2nd 7932 df-map 8762 |
| This theorem is referenced by: iunmapsn 45198 |
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