Theorem blssioo 13185

Description: The balls of the standard real metric space are included in the open real intervals. (Contributed by NM, 8-May-2007.) (Revised by Mario Carneiro, 13-Nov-2013.)

Hypothesis

Ref	Expression
remet.1	|- D = ( ( abs o. - ) |` ( RR X. RR ) )

Assertion

Ref	Expression
blssioo	|- ran ( ball ` D ) C_ ran (,)

Proof of Theorem blssioo

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

Step	Hyp	Ref	Expression
1		remet.1	. . . . 5 |- D = ( ( abs o. - ) |` ( RR X. RR ) )
2	1	rexmet 13181	. . . 4 |- D e. ( *Met ` RR )
3		blrn 13052	. . . 4 |- ( D e. ( *Met ` RR ) -> ( z e. ran ( ball ` D ) <-> E. y e. RR E. r e. RR* z = ( y ( ball ` D ) r ) ) )
4	2, 3	ax-mp 5	. . 3 |- ( z e. ran ( ball ` D ) <-> E. y e. RR E. r e. RR* z = ( y ( ball ` D ) r ) )
5		elxr 9712	. . . . . 6 |- ( r e. RR* <-> ( r e. RR \/ r = +oo \/ r = -oo ) )
6	1	bl2ioo 13182	. . . . . . . 8 |- ( ( y e. RR /\ r e. RR ) -> ( y ( ball ` D ) r ) = ( ( y - r ) (,) ( y + r ) ) )
7		resubcl 8162	. . . . . . . . 9 |- ( ( y e. RR /\ r e. RR ) -> ( y - r ) e. RR )
8		readdcl 7879	. . . . . . . . 9 |- ( ( y e. RR /\ r e. RR ) -> ( y + r ) e. RR )
9		rexr 7944	. . . . . . . . . 10 |- ( ( y - r ) e. RR -> ( y - r ) e. RR* )
10		rexr 7944	. . . . . . . . . 10 |- ( ( y + r ) e. RR -> ( y + r ) e. RR* )
11		ioorebasg 9911	. . . . . . . . . 10 |- ( ( ( y - r ) e. RR* /\ ( y + r ) e. RR* ) -> ( ( y - r ) (,) ( y + r ) ) e. ran (,) )
12	9, 10, 11	syl2an 287	. . . . . . . . 9 |- ( ( ( y - r ) e. RR /\ ( y + r ) e. RR ) -> ( ( y - r ) (,) ( y + r ) ) e. ran (,) )
13	7, 8, 12	syl2anc 409	. . . . . . . 8 |- ( ( y e. RR /\ r e. RR ) -> ( ( y - r ) (,) ( y + r ) ) e. ran (,) )
14	6, 13	eqeltrd 2243	. . . . . . 7 |- ( ( y e. RR /\ r e. RR ) -> ( y ( ball ` D ) r ) e. ran (,) )
15		oveq2 5850	. . . . . . . . 9 |- ( r = +oo -> ( y ( ball ` D ) r ) = ( y ( ball ` D ) +oo ) )
16	1	remet 13180	. . . . . . . . . 10 |- D e. ( Met ` RR )
17		blpnf 13040	. . . . . . . . . 10 |- ( ( D e. ( Met ` RR ) /\ y e. RR ) -> ( y ( ball ` D ) +oo ) = RR )
18	16, 17	mpan 421	. . . . . . . . 9 |- ( y e. RR -> ( y ( ball ` D ) +oo ) = RR )
19	15, 18	sylan9eqr 2221	. . . . . . . 8 |- ( ( y e. RR /\ r = +oo ) -> ( y ( ball ` D ) r ) = RR )
20		ioomax 9884	. . . . . . . . 9 |- ( -oo (,) +oo ) = RR
21		mnfxr 7955	. . . . . . . . . 10 |- -oo e. RR*
22		pnfxr 7951	. . . . . . . . . 10 |- +oo e. RR*
23		ioorebasg 9911	. . . . . . . . . 10 |- ( ( -oo e. RR* /\ +oo e. RR* ) -> ( -oo (,) +oo ) e. ran (,) )
24	21, 22, 23	mp2an 423	. . . . . . . . 9 |- ( -oo (,) +oo ) e. ran (,)
25	20, 24	eqeltrri 2240	. . . . . . . 8 |- RR e. ran (,)
26	19, 25	eqeltrdi 2257	. . . . . . 7 |- ( ( y e. RR /\ r = +oo ) -> ( y ( ball ` D ) r ) e. ran (,) )
27		oveq2 5850	. . . . . . . . 9 |- ( r = -oo -> ( y ( ball ` D ) r ) = ( y ( ball ` D ) -oo ) )
28		0xr 7945	. . . . . . . . . . . 12 |- 0 e. RR*
29		nltmnf 9724	. . . . . . . . . . . 12 |- ( 0 e. RR* -> -. 0 < -oo )
30	28, 29	ax-mp 5	. . . . . . . . . . 11 |- -. 0 < -oo
31		xblm 13057	. . . . . . . . . . . 12 |- ( ( D e. ( *Met ` RR ) /\ y e. RR /\ -oo e. RR* ) -> ( E. w w e. ( y ( ball ` D ) -oo ) <-> 0 < -oo ) )
32	2, 21, 31	mp3an13 1318	. . . . . . . . . . 11 |- ( y e. RR -> ( E. w w e. ( y ( ball ` D ) -oo ) <-> 0 < -oo ) )
33	30, 32	mtbiri 665	. . . . . . . . . 10 |- ( y e. RR -> -. E. w w e. ( y ( ball ` D ) -oo ) )
34		notm0 3429	. . . . . . . . . 10 |- ( -. E. w w e. ( y ( ball ` D ) -oo ) <-> ( y ( ball ` D ) -oo ) = (/) )
35	33, 34	sylib 121	. . . . . . . . 9 |- ( y e. RR -> ( y ( ball ` D ) -oo ) = (/) )
36	27, 35	sylan9eqr 2221	. . . . . . . 8 |- ( ( y e. RR /\ r = -oo ) -> ( y ( ball ` D ) r ) = (/) )
37		iooidg 9845	. . . . . . . . . 10 |- ( 0 e. RR* -> ( 0 (,) 0 ) = (/) )
38	28, 37	ax-mp 5	. . . . . . . . 9 |- ( 0 (,) 0 ) = (/)
39		ioorebasg 9911	. . . . . . . . . 10 |- ( ( 0 e. RR* /\ 0 e. RR* ) -> ( 0 (,) 0 ) e. ran (,) )
40	28, 28, 39	mp2an 423	. . . . . . . . 9 |- ( 0 (,) 0 ) e. ran (,)
41	38, 40	eqeltrri 2240	. . . . . . . 8 |- (/) e. ran (,)
42	36, 41	eqeltrdi 2257	. . . . . . 7 |- ( ( y e. RR /\ r = -oo ) -> ( y ( ball ` D ) r ) e. ran (,) )
43	14, 26, 42	3jaodan 1296	. . . . . 6 |- ( ( y e. RR /\ ( r e. RR \/ r = +oo \/ r = -oo ) ) -> ( y ( ball ` D ) r ) e. ran (,) )
44	5, 43	sylan2b 285	. . . . 5 |- ( ( y e. RR /\ r e. RR* ) -> ( y ( ball ` D ) r ) e. ran (,) )
45		eleq1 2229	. . . . 5 |- ( z = ( y ( ball ` D ) r ) -> ( z e. ran (,) <-> ( y ( ball ` D ) r ) e. ran (,) ) )
46	44, 45	syl5ibrcom 156	. . . 4 |- ( ( y e. RR /\ r e. RR* ) -> ( z = ( y ( ball ` D ) r ) -> z e. ran (,) ) )
47	46	rexlimivv 2589	. . 3 |- ( E. y e. RR E. r e. RR* z = ( y ( ball ` D ) r ) -> z e. ran (,) )
48	4, 47	sylbi 120	. 2 |- ( z e. ran ( ball ` D ) -> z e. ran (,) )
49	48	ssriv 3146	1 |- ran ( ball ` D ) C_ ran (,)

Syntax hints:   -. wn 3   /\ wa 103   <-> wb 104   \/ w3o 967   = wceq 1343   E.wex 1480   e. wcel 2136   E.wrex 2445   C_ wss 3116   (/)c0 3409   class class class wbr 3982   X. cxp 4602   ran crn 4605   |` cres 4606   o. ccom 4608   ` cfv 5188  (class class class)co 5842   RRcr 7752   0cc0 7753   + caddc 7756   +oocpnf 7930   -oocmnf 7931   RR*cxr 7932   < clt 7933   - cmin 8069   (,)cioo 9824   abscabs 10939   *Metcxmet 12620   Metcmet 12621   ballcbl 12622

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-coll 4097  ax-sep 4100  ax-nul 4108  ax-pow 4153  ax-pr 4187  ax-un 4411  ax-setind 4514  ax-iinf 4565  ax-cnex 7844  ax-resscn 7845  ax-1cn 7846  ax-1re 7847  ax-icn 7848  ax-addcl 7849  ax-addrcl 7850  ax-mulcl 7851  ax-mulrcl 7852  ax-addcom 7853  ax-mulcom 7854  ax-addass 7855  ax-mulass 7856  ax-distr 7857  ax-i2m1 7858  ax-0lt1 7859  ax-1rid 7860  ax-0id 7861  ax-rnegex 7862  ax-precex 7863  ax-cnre 7864  ax-pre-ltirr 7865  ax-pre-ltwlin 7866  ax-pre-lttrn 7867  ax-pre-apti 7868  ax-pre-ltadd 7869  ax-pre-mulgt0 7870  ax-pre-mulext 7871  ax-arch 7872  ax-caucvg 7873

This theorem depends on definitions:  df-bi 116  df-dc 825  df-3or 969  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-nel 2432  df-ral 2449  df-rex 2450  df-reu 2451  df-rmo 2452  df-rab 2453  df-v 2728  df-sbc 2952  df-csb 3046  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-nul 3410  df-if 3521  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-int 3825  df-iun 3868  df-br 3983  df-opab 4044  df-mpt 4045  df-tr 4081  df-id 4271  df-po 4274  df-iso 4275  df-iord 4344  df-on 4346  df-ilim 4347  df-suc 4349  df-iom 4568  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-res 4616  df-ima 4617  df-iota 5153  df-fun 5190  df-fn 5191  df-f 5192  df-f1 5193  df-fo 5194  df-f1o 5195  df-fv 5196  df-riota 5798  df-ov 5845  df-oprab 5846  df-mpo 5847  df-1st 6108  df-2nd 6109  df-recs 6273  df-frec 6359  df-map 6616  df-pnf 7935  df-mnf 7936  df-xr 7937  df-ltxr 7938  df-le 7939  df-sub 8071  df-neg 8072  df-reap 8473  df-ap 8480  df-div 8569  df-inn 8858  df-2 8916  df-3 8917  df-4 8918  df-n0 9115  df-z 9192  df-uz 9467  df-rp 9590  df-xadd 9709  df-ioo 9828  df-seqfrec 10381  df-exp 10455  df-cj 10784  df-re 10785  df-im 10786  df-rsqrt 10940  df-abs 10941  df-psmet 12627  df-xmet 12628  df-met 12629  df-bl 12630

This theorem is referenced by:  tgioo  13186