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Mirrors > Home > ILE Home > Th. List > prltlu | GIF version |
Description: An element of a lower cut is less than an element of the corresponding upper cut. (Contributed by Jim Kingdon, 15-Oct-2019.) |
Ref | Expression |
---|---|
prltlu | ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → 𝐵 <Q 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp3 989 | . . 3 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → 𝐶 ∈ 𝑈) | |
2 | eleq1 2229 | . . . . . . 7 ⊢ (𝑞 = 𝐶 → (𝑞 ∈ 𝐿 ↔ 𝐶 ∈ 𝐿)) | |
3 | eleq1 2229 | . . . . . . 7 ⊢ (𝑞 = 𝐶 → (𝑞 ∈ 𝑈 ↔ 𝐶 ∈ 𝑈)) | |
4 | 2, 3 | anbi12d 465 | . . . . . 6 ⊢ (𝑞 = 𝐶 → ((𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈) ↔ (𝐶 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈))) |
5 | 4 | notbid 657 | . . . . 5 ⊢ (𝑞 = 𝐶 → (¬ (𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈) ↔ ¬ (𝐶 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈))) |
6 | elinp 7415 | . . . . . . 7 ⊢ (〈𝐿, 𝑈〉 ∈ P ↔ (((𝐿 ⊆ Q ∧ 𝑈 ⊆ Q) ∧ (∃𝑞 ∈ Q 𝑞 ∈ 𝐿 ∧ ∃𝑟 ∈ Q 𝑟 ∈ 𝑈)) ∧ ((∀𝑞 ∈ Q (𝑞 ∈ 𝐿 ↔ ∃𝑟 ∈ Q (𝑞 <Q 𝑟 ∧ 𝑟 ∈ 𝐿)) ∧ ∀𝑟 ∈ Q (𝑟 ∈ 𝑈 ↔ ∃𝑞 ∈ Q (𝑞 <Q 𝑟 ∧ 𝑞 ∈ 𝑈))) ∧ ∀𝑞 ∈ Q ¬ (𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈) ∧ ∀𝑞 ∈ Q ∀𝑟 ∈ Q (𝑞 <Q 𝑟 → (𝑞 ∈ 𝐿 ∨ 𝑟 ∈ 𝑈))))) | |
7 | simpr2 994 | . . . . . . 7 ⊢ ((((𝐿 ⊆ Q ∧ 𝑈 ⊆ Q) ∧ (∃𝑞 ∈ Q 𝑞 ∈ 𝐿 ∧ ∃𝑟 ∈ Q 𝑟 ∈ 𝑈)) ∧ ((∀𝑞 ∈ Q (𝑞 ∈ 𝐿 ↔ ∃𝑟 ∈ Q (𝑞 <Q 𝑟 ∧ 𝑟 ∈ 𝐿)) ∧ ∀𝑟 ∈ Q (𝑟 ∈ 𝑈 ↔ ∃𝑞 ∈ Q (𝑞 <Q 𝑟 ∧ 𝑞 ∈ 𝑈))) ∧ ∀𝑞 ∈ Q ¬ (𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈) ∧ ∀𝑞 ∈ Q ∀𝑟 ∈ Q (𝑞 <Q 𝑟 → (𝑞 ∈ 𝐿 ∨ 𝑟 ∈ 𝑈)))) → ∀𝑞 ∈ Q ¬ (𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈)) | |
8 | 6, 7 | sylbi 120 | . . . . . 6 ⊢ (〈𝐿, 𝑈〉 ∈ P → ∀𝑞 ∈ Q ¬ (𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈)) |
9 | 8 | 3ad2ant1 1008 | . . . . 5 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → ∀𝑞 ∈ Q ¬ (𝑞 ∈ 𝐿 ∧ 𝑞 ∈ 𝑈)) |
10 | elprnqu 7423 | . . . . . 6 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐶 ∈ 𝑈) → 𝐶 ∈ Q) | |
11 | 10 | 3adant2 1006 | . . . . 5 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → 𝐶 ∈ Q) |
12 | 5, 9, 11 | rspcdva 2835 | . . . 4 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → ¬ (𝐶 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈)) |
13 | ancom 264 | . . . . . 6 ⊢ ((𝐶 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) ↔ (𝐶 ∈ 𝑈 ∧ 𝐶 ∈ 𝐿)) | |
14 | 13 | notbii 658 | . . . . 5 ⊢ (¬ (𝐶 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) ↔ ¬ (𝐶 ∈ 𝑈 ∧ 𝐶 ∈ 𝐿)) |
15 | imnan 680 | . . . . 5 ⊢ ((𝐶 ∈ 𝑈 → ¬ 𝐶 ∈ 𝐿) ↔ ¬ (𝐶 ∈ 𝑈 ∧ 𝐶 ∈ 𝐿)) | |
16 | 14, 15 | bitr4i 186 | . . . 4 ⊢ (¬ (𝐶 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) ↔ (𝐶 ∈ 𝑈 → ¬ 𝐶 ∈ 𝐿)) |
17 | 12, 16 | sylib 121 | . . 3 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → (𝐶 ∈ 𝑈 → ¬ 𝐶 ∈ 𝐿)) |
18 | 1, 17 | mpd 13 | . 2 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → ¬ 𝐶 ∈ 𝐿) |
19 | 3simpa 984 | . . 3 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → (〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿)) | |
20 | prubl 7427 | . . 3 ⊢ (((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿) ∧ 𝐶 ∈ Q) → (¬ 𝐶 ∈ 𝐿 → 𝐵 <Q 𝐶)) | |
21 | 19, 11, 20 | syl2anc 409 | . 2 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → (¬ 𝐶 ∈ 𝐿 → 𝐵 <Q 𝐶)) |
22 | 18, 21 | mpd 13 | 1 ⊢ ((〈𝐿, 𝑈〉 ∈ P ∧ 𝐵 ∈ 𝐿 ∧ 𝐶 ∈ 𝑈) → 𝐵 <Q 𝐶) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ↔ wb 104 ∨ wo 698 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 ∀wral 2444 ∃wrex 2445 ⊆ wss 3116 〈cop 3579 class class class wbr 3982 Qcnq 7221 <Q cltq 7226 Pcnp 7232 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4097 ax-sep 4100 ax-nul 4108 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-iinf 4565 |
This theorem depends on definitions: df-bi 116 df-dc 825 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-tr 4081 df-eprel 4267 df-id 4271 df-po 4274 df-iso 4275 df-iord 4344 df-on 4346 df-suc 4349 df-iom 4568 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-irdg 6338 df-oadd 6388 df-omul 6389 df-er 6501 df-ec 6503 df-qs 6507 df-ni 7245 df-mi 7247 df-lti 7248 df-enq 7288 df-nqqs 7289 df-ltnqqs 7294 df-inp 7407 |
This theorem is referenced by: genpdisj 7464 prmuloc 7507 ltprordil 7530 ltpopr 7536 ltexprlemopu 7544 ltexprlemdisj 7547 ltexprlemfl 7550 ltexprlemfu 7552 ltexprlemru 7553 recexprlemdisj 7571 recexprlemss1l 7576 recexprlemss1u 7577 |
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