Theorem lt2addnq 7366

Description: Ordering property of addition for positive fractions. (Contributed by Jim Kingdon, 7-Dec-2019.)

Assertion

Ref	Expression
lt2addnq	|- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( ( A <Q B /\ C <Q D ) -> ( A +Q C ) <Q ( B +Q D ) ) )

Proof of Theorem lt2addnq

Step	Hyp	Ref	Expression
1		ltanqg 7362	. . . . . 6 |- ( ( A e. Q. /\ B e. Q. /\ C e. Q. ) -> ( A <Q B <-> ( C +Q A ) <Q ( C +Q B ) ) )
2	1	3expa 1198	. . . . 5 |- ( ( ( A e. Q. /\ B e. Q. ) /\ C e. Q. ) -> ( A <Q B <-> ( C +Q A ) <Q ( C +Q B ) ) )
3	2	adantrr 476	. . . 4 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( A <Q B <-> ( C +Q A ) <Q ( C +Q B ) ) )
4		addcomnqg 7343	. . . . . . 7 |- ( ( C e. Q. /\ A e. Q. ) -> ( C +Q A ) = ( A +Q C ) )
5	4	ancoms 266	. . . . . 6 |- ( ( A e. Q. /\ C e. Q. ) -> ( C +Q A ) = ( A +Q C ) )
6	5	ad2ant2r 506	. . . . 5 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( C +Q A ) = ( A +Q C ) )
7		addcomnqg 7343	. . . . . . 7 |- ( ( C e. Q. /\ B e. Q. ) -> ( C +Q B ) = ( B +Q C ) )
8	7	ancoms 266	. . . . . 6 |- ( ( B e. Q. /\ C e. Q. ) -> ( C +Q B ) = ( B +Q C ) )
9	8	ad2ant2lr 507	. . . . 5 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( C +Q B ) = ( B +Q C ) )
10	6, 9	breq12d 4002	. . . 4 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( ( C +Q A ) <Q ( C +Q B ) <-> ( A +Q C ) <Q ( B +Q C ) ) )
11	3, 10	bitrd 187	. . 3 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( A <Q B <-> ( A +Q C ) <Q ( B +Q C ) ) )
12		ltanqg 7362	. . . . . 6 |- ( ( C e. Q. /\ D e. Q. /\ B e. Q. ) -> ( C <Q D <-> ( B +Q C ) <Q ( B +Q D ) ) )
13	12	3expa 1198	. . . . 5 |- ( ( ( C e. Q. /\ D e. Q. ) /\ B e. Q. ) -> ( C <Q D <-> ( B +Q C ) <Q ( B +Q D ) ) )
14	13	ancoms 266	. . . 4 |- ( ( B e. Q. /\ ( C e. Q. /\ D e. Q. ) ) -> ( C <Q D <-> ( B +Q C ) <Q ( B +Q D ) ) )
15	14	adantll 473	. . 3 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( C <Q D <-> ( B +Q C ) <Q ( B +Q D ) ) )
16	11, 15	anbi12d 470	. 2 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( ( A <Q B /\ C <Q D ) <-> ( ( A +Q C ) <Q ( B +Q C ) /\ ( B +Q C ) <Q ( B +Q D ) ) ) )
17		ltsonq 7360	. . 3 |- <Q Or Q.
18		ltrelnq 7327	. . 3 |- <Q C_ ( Q. X. Q. )
19	17, 18	sotri 5006	. 2 |- ( ( ( A +Q C ) <Q ( B +Q C ) /\ ( B +Q C ) <Q ( B +Q D ) ) -> ( A +Q C ) <Q ( B +Q D ) )
20	16, 19	syl6bi 162	1 |- ( ( ( A e. Q. /\ B e. Q. ) /\ ( C e. Q. /\ D e. Q. ) ) -> ( ( A <Q B /\ C <Q D ) -> ( A +Q C ) <Q ( B +Q D ) ) )

Syntax hints:   -> wi 4   /\ wa 103   <-> wb 104   = wceq 1348   e. wcel 2141   class class class wbr 3989  (class class class)co 5853   Q.cnq 7242   +Q cplq 7244   <Q cltq 7247

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-coll 4104  ax-sep 4107  ax-nul 4115  ax-pow 4160  ax-pr 4194  ax-un 4418  ax-setind 4521  ax-iinf 4572

This theorem depends on definitions:  df-bi 116  df-dc 830  df-3or 974  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-csb 3050  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-nul 3415  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-int 3832  df-iun 3875  df-br 3990  df-opab 4051  df-mpt 4052  df-tr 4088  df-eprel 4274  df-id 4278  df-po 4281  df-iso 4282  df-iord 4351  df-on 4353  df-suc 4356  df-iom 4575  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-rn 4622  df-res 4623  df-ima 4624  df-iota 5160  df-fun 5200  df-fn 5201  df-f 5202  df-f1 5203  df-fo 5204  df-f1o 5205  df-fv 5206  df-ov 5856  df-oprab 5857  df-mpo 5858  df-1st 6119  df-2nd 6120  df-recs 6284  df-irdg 6349  df-oadd 6399  df-omul 6400  df-er 6513  df-ec 6515  df-qs 6519  df-ni 7266  df-pli 7267  df-mi 7268  df-lti 7269  df-plpq 7306  df-enq 7309  df-nqqs 7310  df-plqqs 7311  df-ltnqqs 7315

This theorem is referenced by:  addlocprlemeqgt  7494  addnqprlemrl  7519  addnqprlemru  7520  cauappcvgprlemladdfl  7617  caucvgprlemloc  7637  caucvgprprlemloccalc  7646