Theorem ltexprlemrl 7925

Description: Lemma for ltexpri 7928. Reverse direction of our result for lower cuts. (Contributed by Jim Kingdon, 17-Dec-2019.)

Hypothesis

Ref	Expression
ltexprlem.1	|- C = <. { x e. Q. | E. y ( y e. ( 2nd ` A ) /\ ( y +Q x ) e. ( 1st ` B ) ) } , { x e. Q. | E. y ( y e. ( 1st ` A ) /\ ( y +Q x ) e. ( 2nd ` B ) ) } >.

Assertion

Ref	Expression
ltexprlemrl	|- ( A <P B -> ( 1st ` B ) C_ ( 1st ` ( A +P. C ) ) )

Distinct variable groups:   x, y, A   x, B, y   x, C, y

Proof of Theorem ltexprlemrl

Dummy variables z w u v f g h s are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ltrelpr 7820	. . . . . . . 8 |- <P C_ ( P. X. P. )
2	1	brel 4802	. . . . . . 7 |- ( A <P B -> ( A e. P. /\ B e. P. ) )
3	2	simprd 114	. . . . . 6 |- ( A <P B -> B e. P. )
4		prop 7790	. . . . . 6 |- ( B e. P. -> <. ( 1st ` B ) , ( 2nd ` B ) >. e. P. )
5	3, 4	syl 14	. . . . 5 |- ( A <P B -> <. ( 1st ` B ) , ( 2nd ` B ) >. e. P. )
6		prnmaddl 7805	. . . . 5 |- ( ( <. ( 1st ` B ) , ( 2nd ` B ) >. e. P. /\ w e. ( 1st ` B ) ) -> E. v e. Q. ( w +Q v ) e. ( 1st ` B ) )
7	5, 6	sylan 283	. . . 4 |- ( ( A <P B /\ w e. ( 1st ` B ) ) -> E. v e. Q. ( w +Q v ) e. ( 1st ` B ) )
8	2	simpld 112	. . . . . . . 8 |- ( A <P B -> A e. P. )
9		prop 7790	. . . . . . . 8 |- ( A e. P. -> <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. )
10	8, 9	syl 14	. . . . . . 7 |- ( A <P B -> <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. )
11		prarloc 7818	. . . . . . 7 |- ( ( <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. /\ v e. Q. ) -> E. z e. ( 1st ` A ) E. u e. ( 2nd ` A ) u <Q ( z +Q v ) )
12	10, 11	sylan 283	. . . . . 6 |- ( ( A <P B /\ v e. Q. ) -> E. z e. ( 1st ` A ) E. u e. ( 2nd ` A ) u <Q ( z +Q v ) )
13	12	ad2ant2r 509	. . . . 5 |- ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) -> E. z e. ( 1st ` A ) E. u e. ( 2nd ` A ) u <Q ( z +Q v ) )
14		simplll 535	. . . . . . . . . . 11 |- ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) -> A <P B )
15	14	adantr 276	. . . . . . . . . 10 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> A <P B )
16		simplrl 537	. . . . . . . . . 10 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> z e. ( 1st ` A ) )
17		elprnql 7796	. . . . . . . . . . 11 |- ( ( <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. /\ z e. ( 1st ` A ) ) -> z e. Q. )
18	10, 17	sylan 283	. . . . . . . . . 10 |- ( ( A <P B /\ z e. ( 1st ` A ) ) -> z e. Q. )
19	15, 16, 18	syl2anc 411	. . . . . . . . 9 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> z e. Q. )
20		elprnql 7796	. . . . . . . . . . 11 |- ( ( <. ( 1st ` B ) , ( 2nd ` B ) >. e. P. /\ w e. ( 1st ` B ) ) -> w e. Q. )
21	5, 20	sylan 283	. . . . . . . . . 10 |- ( ( A <P B /\ w e. ( 1st ` B ) ) -> w e. Q. )
22	21	ad3antrrr 492	. . . . . . . . 9 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> w e. Q. )
23		nqtri3or 7711	. . . . . . . . 9 |- ( ( z e. Q. /\ w e. Q. ) -> ( z <Q w \/ z = w \/ w <Q z ) )
24	19, 22, 23	syl2anc 411	. . . . . . . 8 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( z <Q w \/ z = w \/ w <Q z ) )
25		ltexnqq 7723	. . . . . . . . . . . . 13 |- ( ( z e. Q. /\ w e. Q. ) -> ( z <Q w <-> E. s e. Q. ( z +Q s ) = w ) )
26	19, 22, 25	syl2anc 411	. . . . . . . . . . . 12 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( z <Q w <-> E. s e. Q. ( z +Q s ) = w ) )
27	26	biimpa 296	. . . . . . . . . . 11 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) -> E. s e. Q. ( z +Q s ) = w )
28		simprr 533	. . . . . . . . . . . 12 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( z +Q s ) = w )
29	16	ad2antrr 488	. . . . . . . . . . . . 13 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> z e. ( 1st ` A ) )
30		simprl 531	. . . . . . . . . . . . . 14 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> s e. Q. )
31		simpr 110	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> u <Q ( z +Q v ) )
32		simplrr 538	. . . . . . . . . . . . . . . . . 18 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> u e. ( 2nd ` A ) )
33		prcunqu 7800	. . . . . . . . . . . . . . . . . . 19 |- ( ( <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. /\ u e. ( 2nd ` A ) ) -> ( u <Q ( z +Q v ) -> ( z +Q v ) e. ( 2nd ` A ) ) )
34	10, 33	sylan 283	. . . . . . . . . . . . . . . . . 18 |- ( ( A <P B /\ u e. ( 2nd ` A ) ) -> ( u <Q ( z +Q v ) -> ( z +Q v ) e. ( 2nd ` A ) ) )
35	15, 32, 34	syl2anc 411	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( u <Q ( z +Q v ) -> ( z +Q v ) e. ( 2nd ` A ) ) )
36	31, 35	mpd 13	. . . . . . . . . . . . . . . 16 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( z +Q v ) e. ( 2nd ` A ) )
37	36	ad2antrr 488	. . . . . . . . . . . . . . 15 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( z +Q v ) e. ( 2nd ` A ) )
38	19	ad2antrr 488	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> z e. Q. )
39		simplrl 537	. . . . . . . . . . . . . . . . . 18 |- ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) -> v e. Q. )
40	39	ad3antrrr 492	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> v e. Q. )
41		addcomnqg 7696	. . . . . . . . . . . . . . . . . 18 |- ( ( f e. Q. /\ g e. Q. ) -> ( f +Q g ) = ( g +Q f ) )
42	41	adantl 277	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) /\ ( f e. Q. /\ g e. Q. ) ) -> ( f +Q g ) = ( g +Q f ) )
43		addassnqg 7697	. . . . . . . . . . . . . . . . . 18 |- ( ( f e. Q. /\ g e. Q. /\ h e. Q. ) -> ( ( f +Q g ) +Q h ) = ( f +Q ( g +Q h ) ) )
44	43	adantl 277	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) /\ ( f e. Q. /\ g e. Q. /\ h e. Q. ) ) -> ( ( f +Q g ) +Q h ) = ( f +Q ( g +Q h ) ) )
45	38, 40, 30, 42, 44	caov32d 6235	. . . . . . . . . . . . . . . 16 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( ( z +Q v ) +Q s ) = ( ( z +Q s ) +Q v ) )
46		simplrr 538	. . . . . . . . . . . . . . . . . 18 |- ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) -> ( w +Q v ) e. ( 1st ` B ) )
47	46	ad3antrrr 492	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( w +Q v ) e. ( 1st ` B ) )
48		oveq1 6057	. . . . . . . . . . . . . . . . . . 19 |- ( ( z +Q s ) = w -> ( ( z +Q s ) +Q v ) = ( w +Q v ) )
49	48	eleq1d 2301	. . . . . . . . . . . . . . . . . 18 |- ( ( z +Q s ) = w -> ( ( ( z +Q s ) +Q v ) e. ( 1st ` B ) <-> ( w +Q v ) e. ( 1st ` B ) ) )
50	28, 49	syl 14	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( ( ( z +Q s ) +Q v ) e. ( 1st ` B ) <-> ( w +Q v ) e. ( 1st ` B ) ) )
51	47, 50	mpbird 167	. . . . . . . . . . . . . . . 16 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( ( z +Q s ) +Q v ) e. ( 1st ` B ) )
52	45, 51	eqeltrd 2309	. . . . . . . . . . . . . . 15 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( ( z +Q v ) +Q s ) e. ( 1st ` B ) )
53		eleq1 2295	. . . . . . . . . . . . . . . . . 18 |- ( y = ( z +Q v ) -> ( y e. ( 2nd ` A ) <-> ( z +Q v ) e. ( 2nd ` A ) ) )
54		oveq1 6057	. . . . . . . . . . . . . . . . . . 19 |- ( y = ( z +Q v ) -> ( y +Q s ) = ( ( z +Q v ) +Q s ) )
55	54	eleq1d 2301	. . . . . . . . . . . . . . . . . 18 |- ( y = ( z +Q v ) -> ( ( y +Q s ) e. ( 1st ` B ) <-> ( ( z +Q v ) +Q s ) e. ( 1st ` B ) ) )
56	53, 55	anbi12d 473	. . . . . . . . . . . . . . . . 17 |- ( y = ( z +Q v ) -> ( ( y e. ( 2nd ` A ) /\ ( y +Q s ) e. ( 1st ` B ) ) <-> ( ( z +Q v ) e. ( 2nd ` A ) /\ ( ( z +Q v ) +Q s ) e. ( 1st ` B ) ) ) )
57	56	spcegv 2905	. . . . . . . . . . . . . . . 16 |- ( ( z +Q v ) e. ( 2nd ` A ) -> ( ( ( z +Q v ) e. ( 2nd ` A ) /\ ( ( z +Q v ) +Q s ) e. ( 1st ` B ) ) -> E. y ( y e. ( 2nd ` A ) /\ ( y +Q s ) e. ( 1st ` B ) ) ) )
58	57	anabsi5 581	. . . . . . . . . . . . . . 15 |- ( ( ( z +Q v ) e. ( 2nd ` A ) /\ ( ( z +Q v ) +Q s ) e. ( 1st ` B ) ) -> E. y ( y e. ( 2nd ` A ) /\ ( y +Q s ) e. ( 1st ` B ) ) )
59	37, 52, 58	syl2anc 411	. . . . . . . . . . . . . 14 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> E. y ( y e. ( 2nd ` A ) /\ ( y +Q s ) e. ( 1st ` B ) ) )
60		ltexprlem.1	. . . . . . . . . . . . . . 15 |- C = <. { x e. Q. | E. y ( y e. ( 2nd ` A ) /\ ( y +Q x ) e. ( 1st ` B ) ) } , { x e. Q. | E. y ( y e. ( 1st ` A ) /\ ( y +Q x ) e. ( 2nd ` B ) ) } >.
61	60	ltexprlemell 7913	. . . . . . . . . . . . . 14 |- ( s e. ( 1st ` C ) <-> ( s e. Q. /\ E. y ( y e. ( 2nd ` A ) /\ ( y +Q s ) e. ( 1st ` B ) ) ) )
62	30, 59, 61	sylanbrc 417	. . . . . . . . . . . . 13 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> s e. ( 1st ` C ) )
63	15, 8	syl 14	. . . . . . . . . . . . . . 15 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> A e. P. )
64	63	ad2antrr 488	. . . . . . . . . . . . . 14 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> A e. P. )
65	60	ltexprlempr 7923	. . . . . . . . . . . . . . . 16 |- ( A <P B -> C e. P. )
66	15, 65	syl 14	. . . . . . . . . . . . . . 15 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> C e. P. )
67	66	ad2antrr 488	. . . . . . . . . . . . . 14 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> C e. P. )
68		df-iplp 7783	. . . . . . . . . . . . . . 15 |- +P. = ( x e. P. , w e. P. |-> <. { z e. Q. | E. f e. Q. E. v e. Q. ( f e. ( 1st ` x ) /\ v e. ( 1st ` w ) /\ z = ( f +Q v ) ) } , { z e. Q. | E. f e. Q. E. v e. Q. ( f e. ( 2nd ` x ) /\ v e. ( 2nd ` w ) /\ z = ( f +Q v ) ) } >. )
69		addclnq 7690	. . . . . . . . . . . . . . 15 |- ( ( f e. Q. /\ v e. Q. ) -> ( f +Q v ) e. Q. )
70	68, 69	genpprecll 7829	. . . . . . . . . . . . . 14 |- ( ( A e. P. /\ C e. P. ) -> ( ( z e. ( 1st ` A ) /\ s e. ( 1st ` C ) ) -> ( z +Q s ) e. ( 1st ` ( A +P. C ) ) ) )
71	64, 67, 70	syl2anc 411	. . . . . . . . . . . . 13 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( ( z e. ( 1st ` A ) /\ s e. ( 1st ` C ) ) -> ( z +Q s ) e. ( 1st ` ( A +P. C ) ) ) )
72	29, 62, 71	mp2and 433	. . . . . . . . . . . 12 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> ( z +Q s ) e. ( 1st ` ( A +P. C ) ) )
73	28, 72	eqeltrrd 2310	. . . . . . . . . . 11 |- ( ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) /\ ( s e. Q. /\ ( z +Q s ) = w ) ) -> w e. ( 1st ` ( A +P. C ) ) )
74	27, 73	rexlimddv 2665	. . . . . . . . . 10 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z <Q w ) -> w e. ( 1st ` ( A +P. C ) ) )
75	74	ex 115	. . . . . . . . 9 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( z <Q w -> w e. ( 1st ` ( A +P. C ) ) ) )
76	14	ad2antrr 488	. . . . . . . . . . 11 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z = w ) -> A <P B )
77		simpr 110	. . . . . . . . . . . 12 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z = w ) -> z = w )
78	16	adantr 276	. . . . . . . . . . . 12 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z = w ) -> z e. ( 1st ` A ) )
79	77, 78	eqeltrrd 2310	. . . . . . . . . . 11 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z = w ) -> w e. ( 1st ` A ) )
80		ltaddpr 7912	. . . . . . . . . . . . 13 |- ( ( A e. P. /\ C e. P. ) -> A <P ( A +P. C ) )
81	8, 65, 80	syl2anc 411	. . . . . . . . . . . 12 |- ( A <P B -> A <P ( A +P. C ) )
82		ltprordil 7904	. . . . . . . . . . . . 13 |- ( A <P ( A +P. C ) -> ( 1st ` A ) C_ ( 1st ` ( A +P. C ) ) )
83	82	sseld 3237	. . . . . . . . . . . 12 |- ( A <P ( A +P. C ) -> ( w e. ( 1st ` A ) -> w e. ( 1st ` ( A +P. C ) ) ) )
84	81, 83	syl 14	. . . . . . . . . . 11 |- ( A <P B -> ( w e. ( 1st ` A ) -> w e. ( 1st ` ( A +P. C ) ) ) )
85	76, 79, 84	sylc 62	. . . . . . . . . 10 |- ( ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) /\ z = w ) -> w e. ( 1st ` ( A +P. C ) ) )
86	85	ex 115	. . . . . . . . 9 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( z = w -> w e. ( 1st ` ( A +P. C ) ) ) )
87		prcdnql 7799	. . . . . . . . . . . 12 |- ( ( <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. /\ z e. ( 1st ` A ) ) -> ( w <Q z -> w e. ( 1st ` A ) ) )
88	10, 87	sylan 283	. . . . . . . . . . 11 |- ( ( A <P B /\ z e. ( 1st ` A ) ) -> ( w <Q z -> w e. ( 1st ` A ) ) )
89	15, 16, 88	syl2anc 411	. . . . . . . . . 10 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( w <Q z -> w e. ( 1st ` A ) ) )
90	15, 89, 84	sylsyld 58	. . . . . . . . 9 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( w <Q z -> w e. ( 1st ` ( A +P. C ) ) ) )
91	75, 86, 90	3jaod 1341	. . . . . . . 8 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> ( ( z <Q w \/ z = w \/ w <Q z ) -> w e. ( 1st ` ( A +P. C ) ) ) )
92	24, 91	mpd 13	. . . . . . 7 |- ( ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) /\ u <Q ( z +Q v ) ) -> w e. ( 1st ` ( A +P. C ) ) )
93	92	ex 115	. . . . . 6 |- ( ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) /\ ( z e. ( 1st ` A ) /\ u e. ( 2nd ` A ) ) ) -> ( u <Q ( z +Q v ) -> w e. ( 1st ` ( A +P. C ) ) ) )
94	93	rexlimdvva 2668	. . . . 5 |- ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) -> ( E. z e. ( 1st ` A ) E. u e. ( 2nd ` A ) u <Q ( z +Q v ) -> w e. ( 1st ` ( A +P. C ) ) ) )
95	13, 94	mpd 13	. . . 4 |- ( ( ( A <P B /\ w e. ( 1st ` B ) ) /\ ( v e. Q. /\ ( w +Q v ) e. ( 1st ` B ) ) ) -> w e. ( 1st ` ( A +P. C ) ) )
96	7, 95	rexlimddv 2665	. . 3 |- ( ( A <P B /\ w e. ( 1st ` B ) ) -> w e. ( 1st ` ( A +P. C ) ) )
97	96	ex 115	. 2 |- ( A <P B -> ( w e. ( 1st ` B ) -> w e. ( 1st ` ( A +P. C ) ) ) )
98	97	ssrdv 3244	1 |- ( A <P B -> ( 1st ` B ) C_ ( 1st ` ( A +P. C ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   \/ w3o 1004   /\ w3a 1005   = wceq 1398   E.wex 1541   e. wcel 2203   E.wrex 2521   {crab 2524   C_ wss 3211   <.cop 3692   class class class wbr 4109   ` cfv 5352  (class class class)co 6050   1stc1st 6332   2ndc2nd 6333   Q.cnq 7595   +Q cplq 7597   <Q cltq 7600   P.cnp 7606   +P. cpp 7608   <P cltp 7610

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 2205  ax-14 2206  ax-ext 2214  ax-coll 4225  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-iinf 4710

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 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-iun 3993  df-br 4110  df-opab 4172  df-mpt 4173  df-tr 4209  df-eprel 4410  df-id 4414  df-po 4417  df-iso 4418  df-iord 4487  df-on 4489  df-suc 4492  df-iom 4713  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-f1 5357  df-fo 5358  df-f1o 5359  df-fv 5360  df-ov 6053  df-oprab 6054  df-mpo 6055  df-1st 6334  df-2nd 6335  df-recs 6536  df-irdg 6601  df-1o 6647  df-2o 6648  df-oadd 6651  df-omul 6652  df-er 6767  df-ec 6769  df-qs 6773  df-ni 7619  df-pli 7620  df-mi 7621  df-lti 7622  df-plpq 7659  df-mpq 7660  df-enq 7662  df-nqqs 7663  df-plqqs 7664  df-mqqs 7665  df-1nqqs 7666  df-rq 7667  df-ltnqqs 7668  df-enq0 7739  df-nq0 7740  df-0nq0 7741  df-plq0 7742  df-mq0 7743  df-inp 7781  df-iplp 7783  df-iltp 7785

This theorem is referenced by:  ltexpri  7928