Theorem xmeterval 15158

Description: Value of the "finitely separated" relation. (Contributed by Mario Carneiro, 24-Aug-2015.)

Hypothesis

Ref	Expression
xmeter.1	|- .~ = ( `' D " RR )

Assertion

Ref	Expression
xmeterval	|- ( D e. ( *Met ` X ) -> ( A .~ B <-> ( A e. X /\ B e. X /\ ( A D B ) e. RR ) ) )

Proof of Theorem xmeterval

Step	Hyp	Ref	Expression
1		xmetf 15073	. . 3 |- ( D e. ( *Met ` X ) -> D : ( X X. X ) --> RR* )
2		ffn 5482	. . 3 |- ( D : ( X X. X ) --> RR* -> D Fn ( X X. X ) )
3		elpreima 5766	. . 3 |- ( D Fn ( X X. X ) -> ( <. A , B >. e. ( `' D " RR ) <-> ( <. A , B >. e. ( X X. X ) /\ ( D ` <. A , B >. ) e. RR ) ) )
4	1, 2, 3	3syl 17	. 2 |- ( D e. ( *Met ` X ) -> ( <. A , B >. e. ( `' D " RR ) <-> ( <. A , B >. e. ( X X. X ) /\ ( D ` <. A , B >. ) e. RR ) ) )
5		xmeter.1	. . . 4 |- .~ = ( `' D " RR )
6	5	breqi 4094	. . 3 |- ( A .~ B <-> A ( `' D " RR ) B )
7		df-br 4089	. . 3 |- ( A ( `' D " RR ) B <-> <. A , B >. e. ( `' D " RR ) )
8	6, 7	bitri 184	. 2 |- ( A .~ B <-> <. A , B >. e. ( `' D " RR ) )
9		df-3an 1006	. . 3 |- ( ( A e. X /\ B e. X /\ ( A D B ) e. RR ) <-> ( ( A e. X /\ B e. X ) /\ ( A D B ) e. RR ) )
10		opelxp 4755	. . . . 5 |- ( <. A , B >. e. ( X X. X ) <-> ( A e. X /\ B e. X ) )
11	10	bicomi 132	. . . 4 |- ( ( A e. X /\ B e. X ) <-> <. A , B >. e. ( X X. X ) )
12		df-ov 6020	. . . . 5 |- ( A D B ) = ( D ` <. A , B >. )
13	12	eleq1i 2297	. . . 4 |- ( ( A D B ) e. RR <-> ( D ` <. A , B >. ) e. RR )
14	11, 13	anbi12i 460	. . 3 |- ( ( ( A e. X /\ B e. X ) /\ ( A D B ) e. RR ) <-> ( <. A , B >. e. ( X X. X ) /\ ( D ` <. A , B >. ) e. RR ) )
15	9, 14	bitri 184	. 2 |- ( ( A e. X /\ B e. X /\ ( A D B ) e. RR ) <-> ( <. A , B >. e. ( X X. X ) /\ ( D ` <. A , B >. ) e. RR ) )
16	4, 8, 15	3bitr4g 223	1 |- ( D e. ( *Met ` X ) -> ( A .~ B <-> ( A e. X /\ B e. X /\ ( A D B ) e. RR ) ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   /\ w3a 1004   = wceq 1397   e. wcel 2202   <.cop 3672   class class class wbr 4088   X. cxp 4723   `'ccnv 4724   "cima 4728   Fn wfn 5321   -->wf 5322   ` cfv 5326  (class class class)co 6017   RRcr 8030   RR*cxr 8212   *Metcxmet 14549

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-fv 5334  df-ov 6020  df-oprab 6021  df-mpo 6022  df-1st 6302  df-2nd 6303  df-map 6818  df-pnf 8215  df-mnf 8216  df-xr 8217  df-xmet 14557

This theorem is referenced by:  xmeter  15159  xmetec  15160  xmetresbl  15163