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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 8979 | . . . . . . 7 ⊢ Rel ≼ | |
| 2 | 1 | brrelex2i 5708 | . . . . . 6 ⊢ (𝐴 ≼ 𝐵 → 𝐵 ∈ V) |
| 3 | domeng 8989 | . . . . . 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 9011 | . . . . . 6 ⊢ (𝐶 ∈ V → 𝐶 ≈ 𝐶) | |
| 9 | 8 | adantl 487 | . . . . 5 ⊢ ((𝐴 ≼ 𝐵 ∧ 𝐶 ∈ V) → 𝐶 ≈ 𝐶) |
| 10 | mapen 9160 | . . . . 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 7453 | . . . . 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 8917 | . . . . . 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 9027 | . . . . 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 9039 | . . . 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 8868 | . . . . . . 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 9126 | . . 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 3451 ⊆ wss 3899 ∅c0 4279 class class class wbr 5103 (class class class)co 7420 ↑m cmap 8847 ≈ cen 8970 ≼ cdom 8971 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 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 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-1st 8001 df-2nd 8002 df-map 8849 df-en 8974 df-dom 8975 |
| This theorem is used by: mappwen 10191 pwcfsdom 10668 cfpwsdom 10669 rpnnen 16395 rexpen 16396 hauspwdom 23820 |
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