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Theorem metequiv2 15361
Description: If there is a sequence of radii approaching zero for which the balls of both metrics coincide, then the generated topologies are equivalent. (Contributed by Mario Carneiro, 26-Aug-2015.)
Hypotheses
Ref Expression
metequiv.3 |- J = ( MetOpen ` C )
metequiv.4 |- K = ( MetOpen ` D )
Assertion
Ref Expression
metequiv2 |- ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) -> ( A. x e. X A. r e. RR+ E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> J = K ) )
Distinct variable groups:   s, r, x, C   J, r, s, x   K, r, s, x   D, r, s, x   X, r, s, x
Proof of Theorem metequiv2
StepHypRef Expression
1 simprrr 542 . . . . . . . . . . 11 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) )
2 simplll 535 . . . . . . . . . . . 12 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> C e. ( *Met ` X ) )
3 simplr 529 . . . . . . . . . . . 12 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> x e. X )
4 simprlr 540 . . . . . . . . . . . . 13 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> s e. RR+ )
54rpxrd 10030 . . . . . . . . . . . 12 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> s e. RR* )
6 simprll 539 . . . . . . . . . . . . 13 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> r e. RR+ )
76rpxrd 10030 . . . . . . . . . . . 12 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> r e. RR* )
8 simprrl 541 . . . . . . . . . . . 12 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> s <_ r )
9 ssbl 15291 . . . . . . . . . . . 12 |- ( ( ( C e. ( *Met ` X ) /\ x e. X ) /\ ( s e. RR* /\ r e. RR* ) /\ s <_ r ) -> ( x ( ball ` C ) s ) C_ ( x ( ball ` C ) r ) )
102, 3, 5, 7, 8, 9syl221anc 1285 . . . . . . . . . . 11 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> ( x ( ball ` C ) s ) C_ ( x ( ball ` C ) r ) )
111, 10eqsstrrd 3275 . . . . . . . . . 10 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) )
12 simpllr 536 . . . . . . . . . . . 12 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> D e. ( *Met ` X ) )
13 ssbl 15291 . . . . . . . . . . . 12 |- ( ( ( D e. ( *Met ` X ) /\ x e. X ) /\ ( s e. RR* /\ r e. RR* ) /\ s <_ r ) -> ( x ( ball ` D ) s ) C_ ( x ( ball ` D ) r ) )
1412, 3, 5, 7, 8, 13syl221anc 1285 . . . . . . . . . . 11 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> ( x ( ball ` D ) s ) C_ ( x ( ball ` D ) r ) )
151, 14eqsstrd 3274 . . . . . . . . . 10 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) )
1611, 15jca 306 . . . . . . . . 9 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( ( r e. RR+ /\ s e. RR+ ) /\ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) ) ) -> ( ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) )
1716expr 375 . . . . . . . 8 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ ( r e. RR+ /\ s e. RR+ ) ) -> ( ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> ( ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
1817anassrs 400 . . . . . . 7 |- ( ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ r e. RR+ ) /\ s e. RR+ ) -> ( ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> ( ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
1918reximdva 2644 . . . . . 6 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ r e. RR+ ) -> ( E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> E. s e. RR+ ( ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
20 r19.40 2697 . . . . . 6 |- ( E. s e. RR+ ( ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) -> ( E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) )
2119, 20syl6 33 . . . . 5 |- ( ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) /\ r e. RR+ ) -> ( E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> ( E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
2221ralimdva 2609 . . . 4 |- ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) -> ( A. r e. RR+ E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> A. r e. RR+ ( E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
23 r19.26 2669 . . . 4 |- ( A. r e. RR+ ( E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) <-> ( A. r e. RR+ E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ A. r e. RR+ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) )
2422, 23imbitrdi 161 . . 3 |- ( ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) /\ x e. X ) -> ( A. r e. RR+ E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> ( A. r e. RR+ E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ A. r e. RR+ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
2524ralimdva 2609 . 2 |- ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) -> ( A. x e. X A. r e. RR+ E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> A. x e. X ( A. r e. RR+ E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ A. r e. RR+ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
26 metequiv.3 . . 3 |- J = ( MetOpen ` C )
27 metequiv.4 . . 3 |- K = ( MetOpen ` D )
2826, 27metequiv 15360 . 2 |- ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) -> ( J = K <-> A. x e. X ( A. r e. RR+ E. s e. RR+ ( x ( ball ` D ) s ) C_ ( x ( ball ` C ) r ) /\ A. r e. RR+ E. s e. RR+ ( x ( ball ` C ) s ) C_ ( x ( ball ` D ) r ) ) ) )
2925, 28sylibrd 169 1 |- ( ( C e. ( *Met ` X ) /\ D e. ( *Met ` X ) ) -> ( A. x e. X A. r e. RR+ E. s e. RR+ ( s <_ r /\ ( x ( ball ` C ) s ) = ( x ( ball ` D ) s ) ) -> J = K ) )
Colors of variables: wff set class
Syntax hints:   -> wi 4   /\ wa 104   = wceq 1398   e. wcel 2203   A.wral 2520   E.wrex 2521   C_ wss 3211   class class class wbr 4109   ` cfv 5352  (class class class)co 6050   RR*cxr 8307   <_ cle 8309   RR+crp 9986   *Metcxmet 14684   ballcbl 14686   MetOpencmopn 14689
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-coll 4225  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-iinf 4710  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-mulrcl 8226  ax-addcom 8227  ax-mulcom 8228  ax-addass 8229  ax-mulass 8230  ax-distr 8231  ax-i2m1 8232  ax-0lt1 8233  ax-1rid 8234  ax-0id 8235  ax-rnegex 8236  ax-precex 8237  ax-cnre 8238  ax-pre-ltirr 8239  ax-pre-ltwlin 8240  ax-pre-lttrn 8241  ax-pre-apti 8242  ax-pre-ltadd 8243  ax-pre-mulgt0 8244  ax-pre-mulext 8245  ax-arch 8246  ax-caucvg 8247
This theorem depends on definitions:  df-bi 117  df-stab 839  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-reu 2527  df-rmo 2528  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-if 3621  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-iun 3993  df-br 4110  df-opab 4172  df-mpt 4173  df-tr 4209  df-id 4414  df-po 4417  df-iso 4418  df-iord 4487  df-on 4489  df-ilim 4490  df-suc 4492  df-iom 4713  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-f1 5357  df-fo 5358  df-f1o 5359  df-fv 5360  df-isom 5361  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-1st 6334  df-2nd 6335  df-recs 6536  df-frec 6622  df-map 6884  df-sup 7275  df-inf 7276  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-sub 8446  df-neg 8447  df-reap 8849  df-ap 8856  df-div 8947  df-inn 9238  df-2 9296  df-3 9297  df-4 9298  df-n0 9497  df-z 9578  df-uz 9854  df-q 9952  df-rp 9987  df-xneg 10105  df-xadd 10106  df-seqfrec 10810  df-exp 10901  df-cj 11527  df-re 11528  df-im 11529  df-rsqrt 11683  df-abs 11684  df-topgen 13473  df-psmet 14691  df-xmet 14692  df-bl 14694  df-mopn 14695  df-top 14863  df-bases 14908
This theorem is referenced by:  bdmopn  15369
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