Theorem nqprloc 7808

Description: A cut produced from a rational is located. Lemma for nqprlu 7810. (Contributed by Jim Kingdon, 8-Dec-2019.)

Assertion

Ref	Expression
nqprloc	|- ( A e. Q. -> A. q e. Q. A. r e. Q. ( q <Q r -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )

Distinct variable group:   x, A, r, q

Proof of Theorem nqprloc

Step	Hyp	Ref	Expression
1		nqtri3or 7659	. . . . . . 7 |- ( ( q e. Q. /\ A e. Q. ) -> ( q <Q A \/ q = A \/ A <Q q ) )
2	1	ancoms 268	. . . . . 6 |- ( ( A e. Q. /\ q e. Q. ) -> ( q <Q A \/ q = A \/ A <Q q ) )
3	2	ad2antrr 488	. . . . 5 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( q <Q A \/ q = A \/ A <Q q ) )
4		vex 2806	. . . . . . . . . 10 |- q e. _V
5		breq1 4096	. . . . . . . . . 10 |- ( x = q -> ( x <Q A <-> q <Q A ) )
6	4, 5	elab 2951	. . . . . . . . 9 |- ( q e. { x | x <Q A } <-> q <Q A )
7	6	biimpri 133	. . . . . . . 8 |- ( q <Q A -> q e. { x | x <Q A } )
8	7	orcd 741	. . . . . . 7 |- ( q <Q A -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) )
9	8	a1i 9	. . . . . 6 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( q <Q A -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
10		simpr 110	. . . . . . . 8 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> q <Q r )
11		breq1 4096	. . . . . . . 8 |- ( q = A -> ( q <Q r <-> A <Q r ) )
12	10, 11	syl5ibcom 155	. . . . . . 7 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( q = A -> A <Q r ) )
13		vex 2806	. . . . . . . . 9 |- r e. _V
14		breq2 4097	. . . . . . . . 9 |- ( x = r -> ( A <Q x <-> A <Q r ) )
15	13, 14	elab 2951	. . . . . . . 8 |- ( r e. { x | A <Q x } <-> A <Q r )
16		olc 719	. . . . . . . 8 |- ( r e. { x | A <Q x } -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) )
17	15, 16	sylbir 135	. . . . . . 7 |- ( A <Q r -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) )
18	12, 17	syl6 33	. . . . . 6 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( q = A -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
19		ltsonq 7661	. . . . . . . . . 10 |- <Q Or Q.
20		ltrelnq 7628	. . . . . . . . . 10 |- <Q C_ ( Q. X. Q. )
21	19, 20	sotri 5139	. . . . . . . . 9 |- ( ( A <Q q /\ q <Q r ) -> A <Q r )
22	21, 17	syl 14	. . . . . . . 8 |- ( ( A <Q q /\ q <Q r ) -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) )
23	22	expcom 116	. . . . . . 7 |- ( q <Q r -> ( A <Q q -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
24	23	adantl 277	. . . . . 6 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( A <Q q -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
25	9, 18, 24	3jaod 1341	. . . . 5 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( ( q <Q A \/ q = A \/ A <Q q ) -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
26	3, 25	mpd 13	. . . 4 |- ( ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) /\ q <Q r ) -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) )
27	26	ex 115	. . 3 |- ( ( ( A e. Q. /\ q e. Q. ) /\ r e. Q. ) -> ( q <Q r -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
28	27	ralrimiva 2606	. 2 |- ( ( A e. Q. /\ q e. Q. ) -> A. r e. Q. ( q <Q r -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )
29	28	ralrimiva 2606	1 |- ( A e. Q. -> A. q e. Q. A. r e. Q. ( q <Q r -> ( q e. { x | x <Q A } \/ r e. { x | A <Q x } ) ) )

Syntax hints:   -> wi 4   /\ wa 104   \/ wo 716   \/ w3o 1004   = wceq 1398   e. wcel 2202   {cab 2217   A.wral 2511   class class class wbr 4093   Q.cnq 7543   <Q cltq 7548

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 2204  ax-14 2205  ax-ext 2213  ax-coll 4209  ax-sep 4212  ax-nul 4220  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641  ax-iinf 4692

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 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-ral 2516  df-rex 2517  df-reu 2518  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-nul 3497  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-int 3934  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-tr 4193  df-eprel 4392  df-id 4396  df-po 4399  df-iso 4400  df-iord 4469  df-on 4471  df-suc 4474  df-iom 4695  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-f1 5338  df-fo 5339  df-f1o 5340  df-fv 5341  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-recs 6514  df-irdg 6579  df-oadd 6629  df-omul 6630  df-er 6745  df-ec 6747  df-qs 6751  df-ni 7567  df-mi 7569  df-lti 7570  df-enq 7610  df-nqqs 7611  df-ltnqqs 7616

This theorem is referenced by:  nqprxx  7809