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Mirrors > Home > MPE Home > Th. List > enqeq | Structured version Visualization version GIF version |
Description: Corollary of nqereu 10685: 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 1147 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐴 ∈ Q ∧ 𝐵 ∈ Q)) | |
2 | elpqn 10681 | . . . . 5 ⊢ (𝐵 ∈ Q → 𝐵 ∈ (N × N)) | |
3 | 2 | 3ad2ant2 1133 | . . . 4 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ∈ (N × N)) |
4 | nqereu 10685 | . . . 4 ⊢ (𝐵 ∈ (N × N) → ∃!𝑥 ∈ Q 𝑥 ~Q 𝐵) | |
5 | reurmo 3364 | . . . 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 1148 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐴 ∈ Q ∧ 𝐴 ~Q 𝐵)) | |
10 | simp2 1136 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ∈ Q) | |
11 | enqer 10677 | . . . . 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 8518 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ~Q 𝐵) |
14 | 10, 13 | jca 512 | . 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 5077 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝑥 ~Q 𝐵 ↔ 𝐴 ~Q 𝐵)) | |
17 | 15, 16 | anbi12d 631 | . . 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 5077 | . . . 4 ⊢ (𝑥 = 𝐵 → (𝑥 ~Q 𝐵 ↔ 𝐵 ~Q 𝐵)) | |
20 | 18, 19 | anbi12d 631 | . . 3 ⊢ (𝑥 = 𝐵 → ((𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵) ↔ (𝐵 ∈ Q ∧ 𝐵 ~Q 𝐵))) |
21 | 17, 20 | moi 3653 | . 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 1373 | 1 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐴 = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ∃*wmo 2538 ∃!wreu 3066 ∃*wrmo 3067 class class class wbr 5074 × cxp 5587 Er wer 8495 Ncnpi 10600 ~Q ceq 10607 Qcnq 10608 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-oadd 8301 df-omul 8302 df-er 8498 df-ni 10628 df-mi 10630 df-lti 10631 df-enq 10667 df-nq 10668 |
This theorem is referenced by: nqereq 10691 ltsonq 10725 |
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