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| Mirrors > Home > ILE Home > Th. List > mapss | GIF version | ||
| Description: Subset inheritance for set exponentiation. Theorem 99 of [Suppes] p. 89. (Contributed by NM, 10-Dec-2003.) (Revised by Mario Carneiro, 26-Apr-2015.) |
| Ref | Expression |
|---|---|
| mapss | ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) → (𝐴 ↑𝑚 𝐶) ⊆ (𝐵 ↑𝑚 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elmapi 6834 | . . . . . 6 ⊢ (𝑓 ∈ (𝐴 ↑𝑚 𝐶) → 𝑓:𝐶⟶𝐴) | |
| 2 | 1 | adantl 277 | . . . . 5 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → 𝑓:𝐶⟶𝐴) |
| 3 | simplr 528 | . . . . 5 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → 𝐴 ⊆ 𝐵) | |
| 4 | 2, 3 | fssd 5492 | . . . 4 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → 𝑓:𝐶⟶𝐵) |
| 5 | simpll 527 | . . . . 5 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → 𝐵 ∈ 𝑉) | |
| 6 | elmapex 6833 | . . . . . . 7 ⊢ (𝑓 ∈ (𝐴 ↑𝑚 𝐶) → (𝐴 ∈ V ∧ 𝐶 ∈ V)) | |
| 7 | 6 | simprd 114 | . . . . . 6 ⊢ (𝑓 ∈ (𝐴 ↑𝑚 𝐶) → 𝐶 ∈ V) |
| 8 | 7 | adantl 277 | . . . . 5 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → 𝐶 ∈ V) |
| 9 | 5, 8 | elmapd 6826 | . . . 4 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → (𝑓 ∈ (𝐵 ↑𝑚 𝐶) ↔ 𝑓:𝐶⟶𝐵)) |
| 10 | 4, 9 | mpbird 167 | . . 3 ⊢ (((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) ∧ 𝑓 ∈ (𝐴 ↑𝑚 𝐶)) → 𝑓 ∈ (𝐵 ↑𝑚 𝐶)) |
| 11 | 10 | ex 115 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) → (𝑓 ∈ (𝐴 ↑𝑚 𝐶) → 𝑓 ∈ (𝐵 ↑𝑚 𝐶))) |
| 12 | 11 | ssrdv 3231 | 1 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐴 ⊆ 𝐵) → (𝐴 ↑𝑚 𝐶) ⊆ (𝐵 ↑𝑚 𝐶)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2200 Vcvv 2800 ⊆ wss 3198 ⟶wf 5320 (class class class)co 6013 ↑𝑚 cmap 6812 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-v 2802 df-sbc 3030 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-fv 5332 df-ov 6016 df-oprab 6017 df-mpo 6018 df-map 6814 |
| This theorem is referenced by: mapdom1g 7028 plyss 15455 bj-charfunbi 16356 |
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