Theorem poinxp 4788

Description: Intersection of partial order with cross product of its field. (Contributed by Mario Carneiro, 10-Jul-2014.)

Assertion

Ref	Expression
poinxp	|- ( R Po A <-> ( R i^i ( A X. A ) ) Po A )

Proof of Theorem poinxp

Dummy variables x y z are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpll 527	. . . . . . . 8 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> x e. A )
2		brinxp 4787	. . . . . . . 8 |- ( ( x e. A /\ x e. A ) -> ( x R x <-> x ( R i^i ( A X. A ) ) x ) )
3	1, 1, 2	syl2anc 411	. . . . . . 7 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( x R x <-> x ( R i^i ( A X. A ) ) x ) )
4	3	notbid 671	. . . . . 6 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( -. x R x <-> -. x ( R i^i ( A X. A ) ) x ) )
5		brinxp 4787	. . . . . . . . 9 |- ( ( x e. A /\ y e. A ) -> ( x R y <-> x ( R i^i ( A X. A ) ) y ) )
6	5	adantr 276	. . . . . . . 8 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( x R y <-> x ( R i^i ( A X. A ) ) y ) )
7		brinxp 4787	. . . . . . . . 9 |- ( ( y e. A /\ z e. A ) -> ( y R z <-> y ( R i^i ( A X. A ) ) z ) )
8	7	adantll 476	. . . . . . . 8 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( y R z <-> y ( R i^i ( A X. A ) ) z ) )
9	6, 8	anbi12d 473	. . . . . . 7 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( ( x R y /\ y R z ) <-> ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) ) )
10		brinxp 4787	. . . . . . . 8 |- ( ( x e. A /\ z e. A ) -> ( x R z <-> x ( R i^i ( A X. A ) ) z ) )
11	10	adantlr 477	. . . . . . 7 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( x R z <-> x ( R i^i ( A X. A ) ) z ) )
12	9, 11	imbi12d 234	. . . . . 6 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( ( ( x R y /\ y R z ) -> x R z ) <-> ( ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) -> x ( R i^i ( A X. A ) ) z ) ) )
13	4, 12	anbi12d 473	. . . . 5 |- ( ( ( x e. A /\ y e. A ) /\ z e. A ) -> ( ( -. x R x /\ ( ( x R y /\ y R z ) -> x R z ) ) <-> ( -. x ( R i^i ( A X. A ) ) x /\ ( ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) -> x ( R i^i ( A X. A ) ) z ) ) ) )
14	13	ralbidva 2526	. . . 4 |- ( ( x e. A /\ y e. A ) -> ( A. z e. A ( -. x R x /\ ( ( x R y /\ y R z ) -> x R z ) ) <-> A. z e. A ( -. x ( R i^i ( A X. A ) ) x /\ ( ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) -> x ( R i^i ( A X. A ) ) z ) ) ) )
15	14	ralbidva 2526	. . 3 |- ( x e. A -> ( A. y e. A A. z e. A ( -. x R x /\ ( ( x R y /\ y R z ) -> x R z ) ) <-> A. y e. A A. z e. A ( -. x ( R i^i ( A X. A ) ) x /\ ( ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) -> x ( R i^i ( A X. A ) ) z ) ) ) )
16	15	ralbiia 2544	. 2 |- ( A. x e. A A. y e. A A. z e. A ( -. x R x /\ ( ( x R y /\ y R z ) -> x R z ) ) <-> A. x e. A A. y e. A A. z e. A ( -. x ( R i^i ( A X. A ) ) x /\ ( ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) -> x ( R i^i ( A X. A ) ) z ) ) )
17		df-po 4387	. 2 |- ( R Po A <-> A. x e. A A. y e. A A. z e. A ( -. x R x /\ ( ( x R y /\ y R z ) -> x R z ) ) )
18		df-po 4387	. 2 |- ( ( R i^i ( A X. A ) ) Po A <-> A. x e. A A. y e. A A. z e. A ( -. x ( R i^i ( A X. A ) ) x /\ ( ( x ( R i^i ( A X. A ) ) y /\ y ( R i^i ( A X. A ) ) z ) -> x ( R i^i ( A X. A ) ) z ) ) )
19	16, 17, 18	3bitr4i 212	1 |- ( R Po A <-> ( R i^i ( A X. A ) ) Po A )

Syntax hints:   -. wn 3   -> wi 4   /\ wa 104   <-> wb 105   e. wcel 2200   A.wral 2508   i^i cin 3196   class class class wbr 4083   Po wpo 4385   X. cxp 4717

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ral 2513  df-rex 2514  df-v 2801  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-br 4084  df-opab 4146  df-po 4387  df-xp 4725

This theorem is referenced by:  soinxp  4789