Theorem dib11N 31958

Description: The isomorphism B for a lattice K is one-to-one in the region under co-atom W. (Contributed by NM, 24-Feb-2014.) (New usage is discouraged.)

Hypotheses

Ref	Expression
dib11.b	|- B = ( Base ` K )
dib11.l	|- .<_ = ( le ` K )
dib11.h	|- H = ( LHyp ` K )
dib11.i	|- I = ( ( DIsoB ` K ) ` W )

Assertion

Ref	Expression
dib11N	|- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( I ` X ) = ( I ` Y ) <-> X = Y ) )

Proof of Theorem dib11N

Step	Hyp	Ref	Expression
1		eqss 3363	. 2 |- ( ( I ` X ) = ( I ` Y ) <-> ( ( I ` X ) C_ ( I ` Y ) /\ ( I ` Y ) C_ ( I ` X ) ) )
2		dib11.b	. . . . 5 |- B = ( Base ` K )
3		dib11.l	. . . . 5 |- .<_ = ( le ` K )
4		dib11.h	. . . . 5 |- H = ( LHyp ` K )
5		dib11.i	. . . . 5 |- I = ( ( DIsoB ` K ) ` W )
6	2, 3, 4, 5	dibord 31957	. . . 4 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( I ` X ) C_ ( I ` Y ) <-> X .<_ Y ) )
7	2, 3, 4, 5	dibord 31957	. . . . 5 |- ( ( ( K e. HL /\ W e. H ) /\ ( Y e. B /\ Y .<_ W ) /\ ( X e. B /\ X .<_ W ) ) -> ( ( I ` Y ) C_ ( I ` X ) <-> Y .<_ X ) )
8	7	3com23 1159	. . . 4 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( I ` Y ) C_ ( I ` X ) <-> Y .<_ X ) )
9	6, 8	anbi12d 692	. . 3 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( ( I ` X ) C_ ( I ` Y ) /\ ( I ` Y ) C_ ( I ` X ) ) <-> ( X .<_ Y /\ Y .<_ X ) ) )
10		simp1l 981	. . . . 5 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> K e. HL )
11		hllat 30161	. . . . 5 |- ( K e. HL -> K e. Lat )
12	10, 11	syl 16	. . . 4 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> K e. Lat )
13		simp2l 983	. . . 4 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> X e. B )
14		simp3l 985	. . . 4 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> Y e. B )
15	2, 3	latasymb 14483	. . . 4 |- ( ( K e. Lat /\ X e. B /\ Y e. B ) -> ( ( X .<_ Y /\ Y .<_ X ) <-> X = Y ) )
16	12, 13, 14, 15	syl3anc 1184	. . 3 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( X .<_ Y /\ Y .<_ X ) <-> X = Y ) )
17	9, 16	bitrd 245	. 2 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( ( I ` X ) C_ ( I ` Y ) /\ ( I ` Y ) C_ ( I ` X ) ) <-> X = Y ) )
18	1, 17	syl5bb 249	1 |- ( ( ( K e. HL /\ W e. H ) /\ ( X e. B /\ X .<_ W ) /\ ( Y e. B /\ Y .<_ W ) ) -> ( ( I ` X ) = ( I ` Y ) <-> X = Y ) )

Syntax hints:   -> wi 4   <-> wb 177   /\ wa 359   /\ w3a 936   = wceq 1652   e. wcel 1725   C_ wss 3320   class class class wbr 4212   ` cfv 5454   Basecbs 13469   lecple 13536   Latclat 14474   HLchlt 30148   LHypclh 30781   DIsoBcdib 31936

This theorem is referenced by:  dibf11N  31959

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-13 1727  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2417  ax-rep 4320  ax-sep 4330  ax-nul 4338  ax-pow 4377  ax-pr 4403  ax-un 4701

This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3or 937  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2285  df-mo 2286  df-clab 2423  df-cleq 2429  df-clel 2432  df-nfc 2561  df-ne 2601  df-nel 2602  df-ral 2710  df-rex 2711  df-reu 2712  df-rmo 2713  df-rab 2714  df-v 2958  df-sbc 3162  df-csb 3252  df-dif 3323  df-un 3325  df-in 3327  df-ss 3334  df-nul 3629  df-if 3740  df-pw 3801  df-sn 3820  df-pr 3821  df-op 3823  df-uni 4016  df-iun 4095  df-iin 4096  df-br 4213  df-opab 4267  df-mpt 4268  df-id 4498  df-xp 4884  df-rel 4885  df-cnv 4886  df-co 4887  df-dm 4888  df-rn 4889  df-res 4890  df-ima 4891  df-iota 5418  df-fun 5456  df-fn 5457  df-f 5458  df-f1 5459  df-fo 5460  df-f1o 5461  df-fv 5462  df-ov 6084  df-oprab 6085  df-mpt2 6086  df-1st 6349  df-2nd 6350  df-undef 6543  df-riota 6549  df-map 7020  df-poset 14403  df-plt 14415  df-lub 14431  df-glb 14432  df-join 14433  df-meet 14434  df-p0 14468  df-p1 14469  df-lat 14475  df-clat 14537  df-oposet 29974  df-ol 29976  df-oml 29977  df-covers 30064  df-ats 30065  df-atl 30096  df-cvlat 30120  df-hlat 30149  df-llines 30295  df-lplanes 30296  df-lvols 30297  df-lines 30298  df-psubsp 30300  df-pmap 30301  df-padd 30593  df-lhyp 30785  df-laut 30786  df-ldil 30901  df-ltrn 30902  df-trl 30956  df-disoa 31827  df-dib 31937