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| Mirrors > Home > ILE Home > Th. List > nqprdisj | GIF version | ||
| Description: A cut produced from a rational is disjoint. Lemma for nqprlu 7742. (Contributed by Jim Kingdon, 8-Dec-2019.) |
| Ref | Expression |
|---|---|
| nqprdisj | ⊢ (𝐴 ∈ Q → ∀𝑞 ∈ Q ¬ (𝑞 ∈ {𝑥 ∣ 𝑥 <Q 𝐴} ∧ 𝑞 ∈ {𝑥 ∣ 𝐴 <Q 𝑥})) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltsonq 7593 | . . . . 5 ⊢ <Q Or Q | |
| 2 | ltrelnq 7560 | . . . . 5 ⊢ <Q ⊆ (Q × Q) | |
| 3 | 1, 2 | son2lpi 5125 | . . . 4 ⊢ ¬ (𝑞 <Q 𝐴 ∧ 𝐴 <Q 𝑞) |
| 4 | vex 2802 | . . . . . 6 ⊢ 𝑞 ∈ V | |
| 5 | breq1 4086 | . . . . . 6 ⊢ (𝑥 = 𝑞 → (𝑥 <Q 𝐴 ↔ 𝑞 <Q 𝐴)) | |
| 6 | 4, 5 | elab 2947 | . . . . 5 ⊢ (𝑞 ∈ {𝑥 ∣ 𝑥 <Q 𝐴} ↔ 𝑞 <Q 𝐴) |
| 7 | breq2 4087 | . . . . . 6 ⊢ (𝑥 = 𝑞 → (𝐴 <Q 𝑥 ↔ 𝐴 <Q 𝑞)) | |
| 8 | 4, 7 | elab 2947 | . . . . 5 ⊢ (𝑞 ∈ {𝑥 ∣ 𝐴 <Q 𝑥} ↔ 𝐴 <Q 𝑞) |
| 9 | 6, 8 | anbi12i 460 | . . . 4 ⊢ ((𝑞 ∈ {𝑥 ∣ 𝑥 <Q 𝐴} ∧ 𝑞 ∈ {𝑥 ∣ 𝐴 <Q 𝑥}) ↔ (𝑞 <Q 𝐴 ∧ 𝐴 <Q 𝑞)) |
| 10 | 3, 9 | mtbir 675 | . . 3 ⊢ ¬ (𝑞 ∈ {𝑥 ∣ 𝑥 <Q 𝐴} ∧ 𝑞 ∈ {𝑥 ∣ 𝐴 <Q 𝑥}) |
| 11 | 10 | rgenw 2585 | . 2 ⊢ ∀𝑞 ∈ Q ¬ (𝑞 ∈ {𝑥 ∣ 𝑥 <Q 𝐴} ∧ 𝑞 ∈ {𝑥 ∣ 𝐴 <Q 𝑥}) |
| 12 | 11 | a1i 9 | 1 ⊢ (𝐴 ∈ Q → ∀𝑞 ∈ Q ¬ (𝑞 ∈ {𝑥 ∣ 𝑥 <Q 𝐴} ∧ 𝑞 ∈ {𝑥 ∣ 𝐴 <Q 𝑥})) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ∈ wcel 2200 {cab 2215 ∀wral 2508 class class class wbr 4083 Qcnq 7475 <Q cltq 7480 |
| 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-coll 4199 ax-sep 4202 ax-nul 4210 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 ax-iinf 4680 |
| This theorem depends on definitions: df-bi 117 df-dc 840 df-3or 1003 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-reu 2515 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-iun 3967 df-br 4084 df-opab 4146 df-mpt 4147 df-tr 4183 df-eprel 4380 df-id 4384 df-po 4387 df-iso 4388 df-iord 4457 df-on 4459 df-suc 4462 df-iom 4683 df-xp 4725 df-rel 4726 df-cnv 4727 df-co 4728 df-dm 4729 df-rn 4730 df-res 4731 df-ima 4732 df-iota 5278 df-fun 5320 df-fn 5321 df-f 5322 df-f1 5323 df-fo 5324 df-f1o 5325 df-fv 5326 df-ov 6010 df-oprab 6011 df-mpo 6012 df-1st 6292 df-2nd 6293 df-recs 6457 df-irdg 6522 df-oadd 6572 df-omul 6573 df-er 6688 df-ec 6690 df-qs 6694 df-ni 7499 df-mi 7501 df-lti 7502 df-enq 7542 df-nqqs 7543 df-ltnqqs 7548 |
| This theorem is referenced by: nqprxx 7741 |
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