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| Mirrors > Home > MPE Home > Th. List > mapdom1 | Structured version Visualization version GIF version | ||
| Description: Order-preserving property of set exponentiation. Theorem 6L(c) of [Enderton] p. 149. (Contributed by NM, 27-Jul-2004.) (Revised by Mario Carneiro, 9-Mar-2013.) |
| Ref | Expression |
|---|---|
| mapdom1 | ⊢ (𝐴 ≼ 𝐵 → (𝐴 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | reldom 8961 | . . . . . . 7 ⊢ Rel ≼ | |
| 2 | 1 | brrelex2i 5712 | . . . . . 6 ⊢ (𝐴 ≼ 𝐵 → 𝐵 ∈ V) |
| 3 | domeng 8971 | . . . . . 6 ⊢ (𝐵 ∈ V → (𝐴 ≼ 𝐵 ↔ ∃𝑥(𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵))) | |
| 4 | 2, 3 | syl 18 | . . . . 5 ⊢ (𝐴 ≼ 𝐵 → (𝐴 ≼ 𝐵 ↔ ∃𝑥(𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵))) |
| 5 | 4 | ibi 270 | . . . 4 ⊢ (𝐴 ≼ 𝐵 → ∃𝑥(𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) |
| 6 | 5 | adantr 486 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) → ∃𝑥(𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) |
| 7 | simpl 488 | . . . . 5 ⊢ ((𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵) → 𝐴 ≈ 𝑥) | |
| 8 | enrefg 8993 | . . . . . 6 ⊢ (𝐶 ∈ V → 𝐶 ≈ 𝐶) | |
| 9 | 8 | adantl 487 | . . . . 5 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) → 𝐶 ≈ 𝐶) |
| 10 | mapen 9142 | . . . . 5 ⊢ ((𝐴 ≈ 𝑥 ∧ 𝐶 ≈ 𝐶) → (𝐴 ↑m 𝐶) ≈ (𝑥 ↑m 𝐶)) | |
| 11 | 7, 9, 10 | syl2anr 609 | . . . 4 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) ∧ (𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) → (𝐴 ↑m 𝐶) ≈ (𝑥 ↑m 𝐶)) |
| 12 | ovex 7447 | . . . . 5 ⊢ (𝐵 ↑m 𝐶) ∈ V | |
| 13 | 2 | ad2antrr 739 | . . . . . 6 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) ∧ (𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) → 𝐵 ∈ V) |
| 14 | simprr 785 | . . . . . 6 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) ∧ (𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) → 𝑥 ⊆ 𝐵) | |
| 15 | mapss 8899 | . . . . . 6 ⊢ ((𝐵 ∈ V ∧ 𝑥 ⊆ 𝐵) → (𝑥 ↑m 𝐶) ⊆ (𝐵 ↑m 𝐶)) | |
| 16 | 13, 14, 15 | syl2anc 596 | . . . . 5 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) ∧ (𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) → (𝑥 ↑m 𝐶) ⊆ (𝐵 ↑m 𝐶)) |
| 17 | ssdomg 9009 | . . . . 5 ⊢ ((𝐵 ↑m 𝐶) ∈ V → ((𝑥 ↑m 𝐶) ⊆ (𝐵 ↑m 𝐶) → (𝑥 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶))) | |
| 18 | 12, 16, 17 | mpsyl 69 | . . . 4 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) ∧ (𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) → (𝑥 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) |
| 19 | endomtr 9021 | . . . 4 ⊢ (((𝐴 ↑m 𝐶) ≈ (𝑥 ↑m 𝐶) ∧ (𝑥 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) → (𝐴 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) | |
| 20 | 11, 18, 19 | syl2anc 596 | . . 3 ⊢ (((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) ∧ (𝐴 ≈ 𝑥 ∧ 𝑥 ⊆ 𝐵)) → (𝐴 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) |
| 21 | 6, 20 | exlimddv 1968 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) → (𝐴 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) |
| 22 | elmapex 8850 | . . . . . . 7 ⊢ (𝑥 ∈ (𝐴 ↑m 𝐶) → (𝐴 ∈ V ∧ 𝐶 ∈ V)) | |
| 23 | 22 | simprd 501 | . . . . . 6 ⊢ (𝑥 ∈ (𝐴 ↑m 𝐶) → 𝐶 ∈ V) |
| 24 | 23 | con3i 155 | . . . . 5 ⊢ (¬ 𝐶 ∈ V → ¬ 𝑥 ∈ (𝐴 ↑m 𝐶)) |
| 25 | 24 | eq0rdv 4365 | . . . 4 ⊢ (¬ 𝐶 ∈ V → (𝐴 ↑m 𝐶) = ∅) |
| 26 | 25 | adantl 487 | . . 3 ⊢ ((𝐴 ≼ 𝐵 ∧ ¬ 𝐶 ∈ V) → (𝐴 ↑m 𝐶) = ∅) |
| 27 | 12 | 0dom 9108 | . . 3 ⊢ ∅ ≼ (𝐵 ↑m 𝐶) |
| 28 | 26, 27 | eqbrtrdi 5144 | . 2 ⊢ ((𝐴 ≼ 𝐵 ∧ ¬ 𝐶 ∈ V) → (𝐴 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) |
| 29 | 21, 28 | pm2.61dan 825 | 1 ⊢ (𝐴 ≼ 𝐵 → (𝐴 ↑m 𝐶) ≼ (𝐵 ↑m 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∃wex 1812 ∈ wcel 2145 Vcvv 3450 ⊆ wss 3899 ∅c0 4279 class class class wbr 5103 (class class class)co 7414 ↑m cmap 8829 ≈ cen 8952 ≼ cdom 8953 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-ov 7417 df-oprab 7418 df-mpo 7419 df-1st 7987 df-2nd 7988 df-map 8831 df-en 8956 df-dom 8957 |
| This theorem is used by: mappwen 10118 pwcfsdom 10595 cfpwsdom 10596 rpnnen 16318 rexpen 16319 hauspwdom 23730 |
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