Theorem nqtri3or 7727

Description: Trichotomy for positive fractions. (Contributed by Jim Kingdon, 21-Sep-2019.)

Assertion

Ref	Expression
nqtri3or	⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 <Q 𝐵 ∨ 𝐴 = 𝐵 ∨ 𝐵 <Q 𝐴))

Proof of Theorem nqtri3or

Dummy variables 𝑢 𝑣 𝑤 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-nqqs 7679	. 2 ⊢ Q = ((N × N) / ~Q )
2		breq1 4117	. . 3 ⊢ ([⟨𝑧, 𝑤⟩] ~Q = 𝐴 → ([⟨𝑧, 𝑤⟩] ~Q <Q [⟨𝑢, 𝑣⟩] ~Q ↔ 𝐴 <Q [⟨𝑢, 𝑣⟩] ~Q ))
3		eqeq1 2241	. . 3 ⊢ ([⟨𝑧, 𝑤⟩] ~Q = 𝐴 → ([⟨𝑧, 𝑤⟩] ~Q = [⟨𝑢, 𝑣⟩] ~Q ↔ 𝐴 = [⟨𝑢, 𝑣⟩] ~Q ))
4		breq2 4118	. . 3 ⊢ ([⟨𝑧, 𝑤⟩] ~Q = 𝐴 → ([⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ [⟨𝑢, 𝑣⟩] ~Q <Q 𝐴))
5	2, 3, 4	3orbi123d 1348	. 2 ⊢ ([⟨𝑧, 𝑤⟩] ~Q = 𝐴 → (([⟨𝑧, 𝑤⟩] ~Q <Q [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑧, 𝑤⟩] ~Q = [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ) ↔ (𝐴 <Q [⟨𝑢, 𝑣⟩] ~Q ∨ 𝐴 = [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑢, 𝑣⟩] ~Q <Q 𝐴)))
6		breq2 4118	. . 3 ⊢ ([⟨𝑢, 𝑣⟩] ~Q = 𝐵 → (𝐴 <Q [⟨𝑢, 𝑣⟩] ~Q ↔ 𝐴 <Q 𝐵))
7		eqeq2 2244	. . 3 ⊢ ([⟨𝑢, 𝑣⟩] ~Q = 𝐵 → (𝐴 = [⟨𝑢, 𝑣⟩] ~Q ↔ 𝐴 = 𝐵))
8		breq1 4117	. . 3 ⊢ ([⟨𝑢, 𝑣⟩] ~Q = 𝐵 → ([⟨𝑢, 𝑣⟩] ~Q <Q 𝐴 ↔ 𝐵 <Q 𝐴))
9	6, 7, 8	3orbi123d 1348	. 2 ⊢ ([⟨𝑢, 𝑣⟩] ~Q = 𝐵 → ((𝐴 <Q [⟨𝑢, 𝑣⟩] ~Q ∨ 𝐴 = [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑢, 𝑣⟩] ~Q <Q 𝐴) ↔ (𝐴 <Q 𝐵 ∨ 𝐴 = 𝐵 ∨ 𝐵 <Q 𝐴)))
10		mulclpi 7659	. . . . 5 ⊢ ((𝑧 ∈ N ∧ 𝑣 ∈ N) → (𝑧 ·N 𝑣) ∈ N)
11	10	ad2ant2rl 511	. . . 4 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → (𝑧 ·N 𝑣) ∈ N)
12		mulclpi 7659	. . . . 5 ⊢ ((𝑤 ∈ N ∧ 𝑢 ∈ N) → (𝑤 ·N 𝑢) ∈ N)
13	12	ad2ant2lr 510	. . . 4 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → (𝑤 ·N 𝑢) ∈ N)
14		pitri3or 7653	. . . 4 ⊢ (((𝑧 ·N 𝑣) ∈ N ∧ (𝑤 ·N 𝑢) ∈ N) → ((𝑧 ·N 𝑣) <N (𝑤 ·N 𝑢) ∨ (𝑧 ·N 𝑣) = (𝑤 ·N 𝑢) ∨ (𝑤 ·N 𝑢) <N (𝑧 ·N 𝑣)))
15	11, 13, 14	syl2anc 411	. . 3 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ((𝑧 ·N 𝑣) <N (𝑤 ·N 𝑢) ∨ (𝑧 ·N 𝑣) = (𝑤 ·N 𝑢) ∨ (𝑤 ·N 𝑢) <N (𝑧 ·N 𝑣)))
16		ordpipqqs 7705	. . . 4 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ([⟨𝑧, 𝑤⟩] ~Q <Q [⟨𝑢, 𝑣⟩] ~Q ↔ (𝑧 ·N 𝑣) <N (𝑤 ·N 𝑢)))
17		enqeceq 7690	. . . 4 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ([⟨𝑧, 𝑤⟩] ~Q = [⟨𝑢, 𝑣⟩] ~Q ↔ (𝑧 ·N 𝑣) = (𝑤 ·N 𝑢)))
18		ordpipqqs 7705	. . . . . 6 ⊢ (((𝑢 ∈ N ∧ 𝑣 ∈ N) ∧ (𝑧 ∈ N ∧ 𝑤 ∈ N)) → ([⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ (𝑢 ·N 𝑤) <N (𝑣 ·N 𝑧)))
19	18	ancoms 268	. . . . 5 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ([⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ (𝑢 ·N 𝑤) <N (𝑣 ·N 𝑧)))
20		mulcompig 7662	. . . . . . 7 ⊢ ((𝑤 ∈ N ∧ 𝑢 ∈ N) → (𝑤 ·N 𝑢) = (𝑢 ·N 𝑤))
21	20	ad2ant2lr 510	. . . . . 6 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → (𝑤 ·N 𝑢) = (𝑢 ·N 𝑤))
22		mulcompig 7662	. . . . . . 7 ⊢ ((𝑧 ∈ N ∧ 𝑣 ∈ N) → (𝑧 ·N 𝑣) = (𝑣 ·N 𝑧))
23	22	ad2ant2rl 511	. . . . . 6 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → (𝑧 ·N 𝑣) = (𝑣 ·N 𝑧))
24	21, 23	breq12d 4127	. . . . 5 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ((𝑤 ·N 𝑢) <N (𝑧 ·N 𝑣) ↔ (𝑢 ·N 𝑤) <N (𝑣 ·N 𝑧)))
25	19, 24	bitr4d 191	. . . 4 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ([⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ (𝑤 ·N 𝑢) <N (𝑧 ·N 𝑣)))
26	16, 17, 25	3orbi123d 1348	. . 3 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → (([⟨𝑧, 𝑤⟩] ~Q <Q [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑧, 𝑤⟩] ~Q = [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ) ↔ ((𝑧 ·N 𝑣) <N (𝑤 ·N 𝑢) ∨ (𝑧 ·N 𝑣) = (𝑤 ·N 𝑢) ∨ (𝑤 ·N 𝑢) <N (𝑧 ·N 𝑣))))
27	15, 26	mpbird 167	. 2 ⊢ (((𝑧 ∈ N ∧ 𝑤 ∈ N) ∧ (𝑢 ∈ N ∧ 𝑣 ∈ N)) → ([⟨𝑧, 𝑤⟩] ~Q <Q [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑧, 𝑤⟩] ~Q = [⟨𝑢, 𝑣⟩] ~Q ∨ [⟨𝑢, 𝑣⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ))
28	1, 5, 9, 27	2ecoptocl 6870	1 ⊢ ((𝐴 ∈ Q ∧ 𝐵 ∈ Q) → (𝐴 <Q 𝐵 ∨ 𝐴 = 𝐵 ∨ 𝐵 <Q 𝐴))

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   ∨ w3o 1004   = wceq 1398   ∈ wcel 2205  ⟨cop 3697   class class class wbr 4114  (class class class)co 6058  [cec 6778  Ncnpi 7603   ·_N cmi 7605   <_N clti 7606   ~_Q ceq 7610  Qcnq 7611   <_Q cltq 7616

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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4230  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-iinf 4715

This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-eprel 4415  df-id 4419  df-iord 4492  df-on 4494  df-suc 4497  df-iom 4718  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1st 6347  df-2nd 6348  df-recs 6549  df-irdg 6614  df-oadd 6664  df-omul 6665  df-er 6780  df-ec 6782  df-qs 6786  df-ni 7635  df-mi 7637  df-lti 7638  df-enq 7678  df-nqqs 7679  df-ltnqqs 7684

This theorem is referenced by:  ltsonq  7729  nqtric  7730  addlocprlem  7866  nqprloc  7876  distrlem4prl  7915  distrlem4pru  7916  ltexprlemrl  7941  aptiprleml  7970  aptiprlemu  7971