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| Mirrors > Home > ILE Home > Th. List > pmss12g | GIF version | ||
| Description: Subset relation for the set of partial functions. (Contributed by Mario Carneiro, 31-Dec-2013.) |
| Ref | Expression |
|---|---|
| pmss12g | ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊)) → (𝐴 ↑pm 𝐵) ⊆ (𝐶 ↑pm 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpss12 4823 | . . . . . . 7 ⊢ ((𝐵 ⊆ 𝐷 ∧ 𝐴 ⊆ 𝐶) → (𝐵 × 𝐴) ⊆ (𝐷 × 𝐶)) | |
| 2 | 1 | ancoms 268 | . . . . . 6 ⊢ ((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) → (𝐵 × 𝐴) ⊆ (𝐷 × 𝐶)) |
| 3 | sstr 3232 | . . . . . . 7 ⊢ ((𝑓 ⊆ (𝐵 × 𝐴) ∧ (𝐵 × 𝐴) ⊆ (𝐷 × 𝐶)) → 𝑓 ⊆ (𝐷 × 𝐶)) | |
| 4 | 3 | expcom 116 | . . . . . 6 ⊢ ((𝐵 × 𝐴) ⊆ (𝐷 × 𝐶) → (𝑓 ⊆ (𝐵 × 𝐴) → 𝑓 ⊆ (𝐷 × 𝐶))) |
| 5 | 2, 4 | syl 14 | . . . . 5 ⊢ ((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) → (𝑓 ⊆ (𝐵 × 𝐴) → 𝑓 ⊆ (𝐷 × 𝐶))) |
| 6 | 5 | anim2d 337 | . . . 4 ⊢ ((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) → ((Fun 𝑓 ∧ 𝑓 ⊆ (𝐵 × 𝐴)) → (Fun 𝑓 ∧ 𝑓 ⊆ (𝐷 × 𝐶)))) |
| 7 | 6 | adantr 276 | . . 3 ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊)) → ((Fun 𝑓 ∧ 𝑓 ⊆ (𝐵 × 𝐴)) → (Fun 𝑓 ∧ 𝑓 ⊆ (𝐷 × 𝐶)))) |
| 8 | ssexg 4222 | . . . . 5 ⊢ ((𝐴 ⊆ 𝐶 ∧ 𝐶 ∈ 𝑉) → 𝐴 ∈ V) | |
| 9 | ssexg 4222 | . . . . 5 ⊢ ((𝐵 ⊆ 𝐷 ∧ 𝐷 ∈ 𝑊) → 𝐵 ∈ V) | |
| 10 | elpmg 6801 | . . . . 5 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝑓 ∈ (𝐴 ↑pm 𝐵) ↔ (Fun 𝑓 ∧ 𝑓 ⊆ (𝐵 × 𝐴)))) | |
| 11 | 8, 9, 10 | syl2an 289 | . . . 4 ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐶 ∈ 𝑉) ∧ (𝐵 ⊆ 𝐷 ∧ 𝐷 ∈ 𝑊)) → (𝑓 ∈ (𝐴 ↑pm 𝐵) ↔ (Fun 𝑓 ∧ 𝑓 ⊆ (𝐵 × 𝐴)))) |
| 12 | 11 | an4s 590 | . . 3 ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊)) → (𝑓 ∈ (𝐴 ↑pm 𝐵) ↔ (Fun 𝑓 ∧ 𝑓 ⊆ (𝐵 × 𝐴)))) |
| 13 | elpmg 6801 | . . . 4 ⊢ ((𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊) → (𝑓 ∈ (𝐶 ↑pm 𝐷) ↔ (Fun 𝑓 ∧ 𝑓 ⊆ (𝐷 × 𝐶)))) | |
| 14 | 13 | adantl 277 | . . 3 ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊)) → (𝑓 ∈ (𝐶 ↑pm 𝐷) ↔ (Fun 𝑓 ∧ 𝑓 ⊆ (𝐷 × 𝐶)))) |
| 15 | 7, 12, 14 | 3imtr4d 203 | . 2 ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊)) → (𝑓 ∈ (𝐴 ↑pm 𝐵) → 𝑓 ∈ (𝐶 ↑pm 𝐷))) |
| 16 | 15 | ssrdv 3230 | 1 ⊢ (((𝐴 ⊆ 𝐶 ∧ 𝐵 ⊆ 𝐷) ∧ (𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑊)) → (𝐴 ↑pm 𝐵) ⊆ (𝐶 ↑pm 𝐷)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∈ wcel 2200 Vcvv 2799 ⊆ wss 3197 × cxp 4714 Fun wfun 5308 (class class class)co 5994 ↑pm cpm 6786 |
| 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 4201 ax-pow 4257 ax-pr 4292 ax-un 4521 ax-setind 4626 |
| 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-rab 2517 df-v 2801 df-sbc 3029 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-br 4083 df-opab 4145 df-id 4381 df-xp 4722 df-rel 4723 df-cnv 4724 df-co 4725 df-dm 4726 df-iota 5274 df-fun 5316 df-fv 5322 df-ov 5997 df-oprab 5998 df-mpo 5999 df-pm 6788 |
| This theorem is referenced by: lmres 14907 dvidsslem 15352 |
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