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Mirrors > Home > MPE Home > Th. List > enqeq | Structured version Visualization version GIF version |
Description: Corollary of nqereu 10616: if two fractions are both reduced and equivalent, then they are equal. (Contributed by Mario Carneiro, 6-May-2013.) (New usage is discouraged.) |
Ref | Expression |
---|---|
enqeq | ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐴 = 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3simpa 1146 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐴 ∈ Q ∧ 𝐵 ∈ Q)) | |
2 | elpqn 10612 | . . . . 5 ⊢ (𝐵 ∈ Q → 𝐵 ∈ (N × N)) | |
3 | 2 | 3ad2ant2 1132 | . . . 4 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ∈ (N × N)) |
4 | nqereu 10616 | . . . 4 ⊢ (𝐵 ∈ (N × N) → ∃!𝑥 ∈ Q 𝑥 ~Q 𝐵) | |
5 | reurmo 3354 | . . . 4 ⊢ (∃!𝑥 ∈ Q 𝑥 ~Q 𝐵 → ∃*𝑥 ∈ Q 𝑥 ~Q 𝐵) | |
6 | 3, 4, 5 | 3syl 18 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → ∃*𝑥 ∈ Q 𝑥 ~Q 𝐵) |
7 | df-rmo 3071 | . . 3 ⊢ (∃*𝑥 ∈ Q 𝑥 ~Q 𝐵 ↔ ∃*𝑥(𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵)) | |
8 | 6, 7 | sylib 217 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → ∃*𝑥(𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵)) |
9 | 3simpb 1147 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐴 ∈ Q ∧ 𝐴 ~Q 𝐵)) | |
10 | simp2 1135 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ∈ Q) | |
11 | enqer 10608 | . . . . 5 ⊢ ~Q Er (N × N) | |
12 | 11 | a1i 11 | . . . 4 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → ~Q Er (N × N)) |
13 | 12, 3 | erref 8476 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ~Q 𝐵) |
14 | 10, 13 | jca 511 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐵 ∈ Q ∧ 𝐵 ~Q 𝐵)) |
15 | eleq1 2826 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝑥 ∈ Q ↔ 𝐴 ∈ Q)) | |
16 | breq1 5073 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝑥 ~Q 𝐵 ↔ 𝐴 ~Q 𝐵)) | |
17 | 15, 16 | anbi12d 630 | . . 3 ⊢ (𝑥 = 𝐴 → ((𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵) ↔ (𝐴 ∈ Q ∧ 𝐴 ~Q 𝐵))) |
18 | eleq1 2826 | . . . 4 ⊢ (𝑥 = 𝐵 → (𝑥 ∈ Q ↔ 𝐵 ∈ Q)) | |
19 | breq1 5073 | . . . 4 ⊢ (𝑥 = 𝐵 → (𝑥 ~Q 𝐵 ↔ 𝐵 ~Q 𝐵)) | |
20 | 18, 19 | anbi12d 630 | . . 3 ⊢ (𝑥 = 𝐵 → ((𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵) ↔ (𝐵 ∈ Q ∧ 𝐵 ~Q 𝐵))) |
21 | 17, 20 | moi 3648 | . 2 ⊢ (((𝐴 ∈ Q ∧ 𝐵 ∈ Q) ∧ ∃*𝑥(𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵) ∧ ((𝐴 ∈ Q ∧ 𝐴 ~Q 𝐵) ∧ (𝐵 ∈ Q ∧ 𝐵 ~Q 𝐵))) → 𝐴 = 𝐵) |
22 | 1, 8, 9, 14, 21 | syl112anc 1372 | 1 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐴 = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ∃*wmo 2538 ∃!wreu 3065 ∃*wrmo 3066 class class class wbr 5070 × cxp 5578 Er wer 8453 Ncnpi 10531 ~Q ceq 10538 Qcnq 10539 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-oadd 8271 df-omul 8272 df-er 8456 df-ni 10559 df-mi 10561 df-lti 10562 df-enq 10598 df-nq 10599 |
This theorem is referenced by: nqereq 10622 ltsonq 10656 |
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