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Mirrors > Home > MPE Home > Th. List > enqeq | Structured version Visualization version GIF version |
Description: Corollary of nqereu 9751: 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 1058 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐴 ∈ Q ∧ 𝐵 ∈ Q)) | |
2 | elpqn 9747 | . . . . 5 ⊢ (𝐵 ∈ Q → 𝐵 ∈ (N × N)) | |
3 | 2 | 3ad2ant2 1083 | . . . 4 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ∈ (N × N)) |
4 | nqereu 9751 | . . . 4 ⊢ (𝐵 ∈ (N × N) → ∃!𝑥 ∈ Q 𝑥 ~Q 𝐵) | |
5 | reurmo 3161 | . . . 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 2920 | . . 3 ⊢ (∃*𝑥 ∈ Q 𝑥 ~Q 𝐵 ↔ ∃*𝑥(𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵)) | |
8 | 6, 7 | sylib 208 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → ∃*𝑥(𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵)) |
9 | 3simpb 1059 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐴 ∈ Q ∧ 𝐴 ~Q 𝐵)) | |
10 | simp2 1062 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ∈ Q) | |
11 | enqer 9743 | . . . . 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 7762 | . . 3 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐵 ~Q 𝐵) |
14 | 10, 13 | jca 554 | . 2 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → (𝐵 ∈ Q ∧ 𝐵 ~Q 𝐵)) |
15 | eleq1 2689 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝑥 ∈ Q ↔ 𝐴 ∈ Q)) | |
16 | breq1 4656 | . . . 4 ⊢ (𝑥 = 𝐴 → (𝑥 ~Q 𝐵 ↔ 𝐴 ~Q 𝐵)) | |
17 | 15, 16 | anbi12d 747 | . . 3 ⊢ (𝑥 = 𝐴 → ((𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵) ↔ (𝐴 ∈ Q ∧ 𝐴 ~Q 𝐵))) |
18 | eleq1 2689 | . . . 4 ⊢ (𝑥 = 𝐵 → (𝑥 ∈ Q ↔ 𝐵 ∈ Q)) | |
19 | breq1 4656 | . . . 4 ⊢ (𝑥 = 𝐵 → (𝑥 ~Q 𝐵 ↔ 𝐵 ~Q 𝐵)) | |
20 | 18, 19 | anbi12d 747 | . . 3 ⊢ (𝑥 = 𝐵 → ((𝑥 ∈ Q ∧ 𝑥 ~Q 𝐵) ↔ (𝐵 ∈ Q ∧ 𝐵 ~Q 𝐵))) |
21 | 17, 20 | moi 3389 | . 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 1330 | 1 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q ∧ 𝐴 ~Q 𝐵) → 𝐴 = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 ∧ w3a 1037 = wceq 1483 ∈ wcel 1990 ∃*wmo 2471 ∃!wreu 2914 ∃*wrmo 2915 class class class wbr 4653 × cxp 5112 Er wer 7739 Ncnpi 9666 ~Q ceq 9673 Qcnq 9674 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rmo 2920 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-oadd 7564 df-omul 7565 df-er 7742 df-ni 9694 df-mi 9696 df-lti 9697 df-enq 9733 df-nq 9734 |
This theorem is referenced by: nqereq 9757 ltsonq 9791 |
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