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| Mirrors > Home > ILE Home > Th. List > ltnqpri | GIF version | ||
| Description: We can order fractions via <Q or <P. (Contributed by Jim Kingdon, 8-Jan-2021.) |
| Ref | Expression |
|---|---|
| ltnqpri | ⊢ (𝐴 <Q 𝐵 → 〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉<P 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltrelnq 7739 | . . . . . . . 8 ⊢ <Q ⊆ (Q × Q) | |
| 2 | 1 | brel 4829 | . . . . . . 7 ⊢ (𝐴 <Q 𝐵 → (𝐴 ∈ Q ∧ 𝐵 ∈ Q)) |
| 3 | 2 | simpld 112 | . . . . . 6 ⊢ (𝐴 <Q 𝐵 → 𝐴 ∈ Q) |
| 4 | nqprlu 7921 | . . . . . 6 ⊢ (𝐴 ∈ Q → 〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉 ∈ P) | |
| 5 | 3, 4 | syl 14 | . . . . 5 ⊢ (𝐴 <Q 𝐵 → 〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉 ∈ P) |
| 6 | 2 | simprd 114 | . . . . . 6 ⊢ (𝐴 <Q 𝐵 → 𝐵 ∈ Q) |
| 7 | nqprlu 7921 | . . . . . 6 ⊢ (𝐵 ∈ Q → 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ∈ P) | |
| 8 | 6, 7 | syl 14 | . . . . 5 ⊢ (𝐴 <Q 𝐵 → 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ∈ P) |
| 9 | ltdfpr 7880 | . . . . 5 ⊢ ((〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉 ∈ P ∧ 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ∈ P) → (〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉<P 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ↔ ∃𝑥 ∈ Q (𝑥 ∈ (2nd ‘〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉) ∧ 𝑥 ∈ (1st ‘〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉)))) | |
| 10 | 5, 8, 9 | syl2anc 415 | . . . 4 ⊢ (𝐴 <Q 𝐵 → (〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉<P 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ↔ ∃𝑥 ∈ Q (𝑥 ∈ (2nd ‘〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉) ∧ 𝑥 ∈ (1st ‘〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉)))) |
| 11 | vex 2824 | . . . . . . 7 ⊢ 𝑥 ∈ V | |
| 12 | breq2 4135 | . . . . . . 7 ⊢ (𝑢 = 𝑥 → (𝐴 <Q 𝑢 ↔ 𝐴 <Q 𝑥)) | |
| 13 | ltnqex 7923 | . . . . . . . 8 ⊢ {𝑙 ∣ 𝑙 <Q 𝐴} ∈ V | |
| 14 | gtnqex 7924 | . . . . . . . 8 ⊢ {𝑢 ∣ 𝐴 <Q 𝑢} ∈ V | |
| 15 | 13, 14 | op2nd 6385 | . . . . . . 7 ⊢ (2nd ‘〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉) = {𝑢 ∣ 𝐴 <Q 𝑢} |
| 16 | 11, 12, 15 | elab2 2974 | . . . . . 6 ⊢ (𝑥 ∈ (2nd ‘〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉) ↔ 𝐴 <Q 𝑥) |
| 17 | breq1 4134 | . . . . . . 7 ⊢ (𝑙 = 𝑥 → (𝑙 <Q 𝐵 ↔ 𝑥 <Q 𝐵)) | |
| 18 | ltnqex 7923 | . . . . . . . 8 ⊢ {𝑙 ∣ 𝑙 <Q 𝐵} ∈ V | |
| 19 | gtnqex 7924 | . . . . . . . 8 ⊢ {𝑢 ∣ 𝐵 <Q 𝑢} ∈ V | |
| 20 | 18, 19 | op1st 6384 | . . . . . . 7 ⊢ (1st ‘〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉) = {𝑙 ∣ 𝑙 <Q 𝐵} |
| 21 | 11, 17, 20 | elab2 2974 | . . . . . 6 ⊢ (𝑥 ∈ (1st ‘〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉) ↔ 𝑥 <Q 𝐵) |
| 22 | 16, 21 | anbi12i 464 | . . . . 5 ⊢ ((𝑥 ∈ (2nd ‘〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉) ∧ 𝑥 ∈ (1st ‘〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉)) ↔ (𝐴 <Q 𝑥 ∧ 𝑥 <Q 𝐵)) |
| 23 | 22 | rexbii 2557 | . . . 4 ⊢ (∃𝑥 ∈ Q (𝑥 ∈ (2nd ‘〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉) ∧ 𝑥 ∈ (1st ‘〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉)) ↔ ∃𝑥 ∈ Q (𝐴 <Q 𝑥 ∧ 𝑥 <Q 𝐵)) |
| 24 | 10, 23 | bitrdi 196 | . . 3 ⊢ (𝐴 <Q 𝐵 → (〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉<P 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ↔ ∃𝑥 ∈ Q (𝐴 <Q 𝑥 ∧ 𝑥 <Q 𝐵))) |
| 25 | ltbtwnnqq 7789 | . . 3 ⊢ (𝐴 <Q 𝐵 ↔ ∃𝑥 ∈ Q (𝐴 <Q 𝑥 ∧ 𝑥 <Q 𝐵)) | |
| 26 | 24, 25 | bitr4di 198 | . 2 ⊢ (𝐴 <Q 𝐵 → (〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉<P 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉 ↔ 𝐴 <Q 𝐵)) |
| 27 | 26 | ibir 177 | 1 ⊢ (𝐴 <Q 𝐵 → 〈{𝑙 ∣ 𝑙 <Q 𝐴}, {𝑢 ∣ 𝐴 <Q 𝑢}〉<P 〈{𝑙 ∣ 𝑙 <Q 𝐵}, {𝑢 ∣ 𝐵 <Q 𝑢}〉) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 ∈ wcel 2209 {cab 2224 ∃wrex 2529 〈cop 3712 class class class wbr 4131 ‘cfv 5380 1st c1st 6376 2nd c2nd 6377 Qcnq 7654 <Q cltq 7659 Pcnp 7665 <P cltp 7669 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-eprel 4436 df-id 4440 df-po 4443 df-iso 4444 df-iord 4513 df-on 4515 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-irdg 6645 df-1o 6691 df-oadd 6695 df-omul 6696 df-er 6811 df-ec 6813 df-qs 6817 df-ni 7678 df-pli 7679 df-mi 7680 df-lti 7681 df-plpq 7718 df-mpq 7719 df-enq 7721 df-nqqs 7722 df-plqqs 7723 df-mqqs 7724 df-1nqqs 7725 df-rq 7726 df-ltnqqs 7727 df-inp 7840 df-iltp 7844 |
| This theorem is used by: caucvgprprlemk 8057 caucvgprprlemloccalc 8058 caucvgprprlemnjltk 8065 caucvgprprlemlol 8072 caucvgprprlemupu 8074 suplocexprlemloc 8095 |
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