Theorem ixxss12 9909

Description: Subset relationship for intervals of extended reals. (Contributed by Mario Carneiro, 20-Feb-2015.) (Revised by Mario Carneiro, 28-Apr-2015.)

Hypotheses

Ref	Expression
ixxssixx.1	|- O = ( x e. RR* , y e. RR* |-> { z e. RR* | ( x R z /\ z S y ) } )
ixxss12.2	|- P = ( x e. RR* , y e. RR* |-> { z e. RR* | ( x T z /\ z U y ) } )
ixxss12.3	|- ( ( A e. RR* /\ C e. RR* /\ w e. RR* ) -> ( ( A W C /\ C T w ) -> A R w ) )
ixxss12.4	|- ( ( w e. RR* /\ D e. RR* /\ B e. RR* ) -> ( ( w U D /\ D X B ) -> w S B ) )

Assertion

Ref	Expression
ixxss12	|- ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) -> ( C P D ) C_ ( A O B ) )

Distinct variable groups:   x, w, y, z, A   w, C, x, y, z   w, D, x, y, z   w, O, x   w, B, x, y, z   w, P   x, R, y, z   x, S, y, z   x, T, y, z   x, U, y, z   w, W   w, X

Allowed substitution hints:   P( x, y, z)   R( w)   S( w)   T( w)   U( w)   O( y, z)   W( x, y, z)   X( x, y, z)

Proof of Theorem ixxss12

Step	Hyp	Ref	Expression
1		ixxss12.2	. . . . . . . 8 |- P = ( x e. RR* , y e. RR* |-> { z e. RR* | ( x T z /\ z U y ) } )
2	1	elixx3g 9904	. . . . . . 7 |- ( w e. ( C P D ) <-> ( ( C e. RR* /\ D e. RR* /\ w e. RR* ) /\ ( C T w /\ w U D ) ) )
3	2	simplbi 274	. . . . . 6 |- ( w e. ( C P D ) -> ( C e. RR* /\ D e. RR* /\ w e. RR* ) )
4	3	adantl 277	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> ( C e. RR* /\ D e. RR* /\ w e. RR* ) )
5	4	simp3d 1011	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> w e. RR* )
6		simplrl 535	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> A W C )
7	2	simprbi 275	. . . . . . 7 |- ( w e. ( C P D ) -> ( C T w /\ w U D ) )
8	7	adantl 277	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> ( C T w /\ w U D ) )
9	8	simpld 112	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> C T w )
10		simplll 533	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> A e. RR* )
11	4	simp1d 1009	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> C e. RR* )
12		ixxss12.3	. . . . . 6 |- ( ( A e. RR* /\ C e. RR* /\ w e. RR* ) -> ( ( A W C /\ C T w ) -> A R w ) )
13	10, 11, 5, 12	syl3anc 1238	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> ( ( A W C /\ C T w ) -> A R w ) )
14	6, 9, 13	mp2and 433	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> A R w )
15	8	simprd 114	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> w U D )
16		simplrr 536	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> D X B )
17	4	simp2d 1010	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> D e. RR* )
18		simpllr 534	. . . . . 6 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> B e. RR* )
19		ixxss12.4	. . . . . 6 |- ( ( w e. RR* /\ D e. RR* /\ B e. RR* ) -> ( ( w U D /\ D X B ) -> w S B ) )
20	5, 17, 18, 19	syl3anc 1238	. . . . 5 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> ( ( w U D /\ D X B ) -> w S B ) )
21	15, 16, 20	mp2and 433	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> w S B )
22		ixxssixx.1	. . . . . 6 |- O = ( x e. RR* , y e. RR* |-> { z e. RR* | ( x R z /\ z S y ) } )
23	22	elixx1 9900	. . . . 5 |- ( ( A e. RR* /\ B e. RR* ) -> ( w e. ( A O B ) <-> ( w e. RR* /\ A R w /\ w S B ) ) )
24	23	ad2antrr 488	. . . 4 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> ( w e. ( A O B ) <-> ( w e. RR* /\ A R w /\ w S B ) ) )
25	5, 14, 21, 24	mpbir3and 1180	. . 3 |- ( ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) /\ w e. ( C P D ) ) -> w e. ( A O B ) )
26	25	ex 115	. 2 |- ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) -> ( w e. ( C P D ) -> w e. ( A O B ) ) )
27	26	ssrdv 3163	1 |- ( ( ( A e. RR* /\ B e. RR* ) /\ ( A W C /\ D X B ) ) -> ( C P D ) C_ ( A O B ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   /\ w3a 978   = wceq 1353   e. wcel 2148   {crab 2459   C_ wss 3131   class class class wbr 4005  (class class class)co 5878   e. cmpo 5880   RR*cxr 7994

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 614  ax-in2 615  ax-io 709  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-10 1505  ax-11 1506  ax-i12 1507  ax-bndl 1509  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-13 2150  ax-14 2151  ax-ext 2159  ax-sep 4123  ax-pow 4176  ax-pr 4211  ax-un 4435  ax-setind 4538  ax-cnex 7905  ax-resscn 7906

This theorem depends on definitions:  df-bi 117  df-3an 980  df-tru 1356  df-fal 1359  df-nf 1461  df-sb 1763  df-eu 2029  df-mo 2030  df-clab 2164  df-cleq 2170  df-clel 2173  df-nfc 2308  df-ne 2348  df-ral 2460  df-rex 2461  df-rab 2464  df-v 2741  df-sbc 2965  df-dif 3133  df-un 3135  df-in 3137  df-ss 3144  df-pw 3579  df-sn 3600  df-pr 3601  df-op 3603  df-uni 3812  df-br 4006  df-opab 4067  df-id 4295  df-xp 4634  df-rel 4635  df-cnv 4636  df-co 4637  df-dm 4638  df-iota 5180  df-fun 5220  df-fv 5226  df-ov 5881  df-oprab 5882  df-mpo 5883  df-pnf 7997  df-mnf 7998  df-xr 7999

This theorem is referenced by:  iccss  9944  iccssioo  9945  icossico  9946  iccss2  9947  iccssico  9948  iocssioo  9966  icossioo  9967  ioossioo  9968