Équation homologique et classification analytique des germes de champs de vecteurs holomorphes de type noeud-col
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(26) GJI $# G &S$LÑS"% G &S$aS*$?OJ* %$*&. (0, 0). S2x=R ! SPÿQS*' I #$)x G N G G ! xS%$. Z(x, y) := A(x, y). ∂ ∂ + B(x, y) . ∂x ∂y. G 'v"r' I Sû$ R''R2xS%RòR I Þ2xSR E! $rm $LÑ&SO I N RQL ')""% I LÑ'[m N G #LMOJLÑ&Sut JG I $ $ I!S!hG $ G S& $r I N N N Z m G #LMOJLÑ&S×$ " %L 'H{==R½&S$aS%$# GfG # G &S&S"*%$ LÑ&S"RQLÑ*$RQS" I R½')*$ . f v r'aS. Z1 = λ 1 x. P& !HG $*)R. ∂ ∂ + λ2 y ∂x ∂y. λ2 6= 0 . λ :=. λ1 . λ2. GJI $;SLM G &S$ I × I EOJ* %$ÜS)2xSR E! $DSaÿJ*') I $ Z *' Z˜ $ G &('¼R½&=R N s'L~ I %&(' .zýTþ2ÿ } G N f N %&('21 G & v#I O I "%$ $ L N $ G &(' N R ¼"%#LÑ' I aR ! n%$ÜRÿ G LÑ·»hSr' I " I &%2x=RQ&OJ %&('ÜS GfG # G &S&S"*%$ N N .zýTþ2ÿ } G N 1gRQ&(' (0, 0) {Y *$#' f m f SLM# ψ G R Z˜ = ψ ∗ Z = Dψ −1 (Z ◦ ψ) .. q¤ÃOJ% S 9}k I L NMN r'RQOQû$LM&O I N LÑ%-LÑ&S I L ' ! RQ I &m') N 2x=R E! SÃÿQS*' I #$ Z $#%)R& G ')" FZ t q®%$ }k I L NMN *$aS]*]}k I L NÑN *')RQOJ$ G &(' N %$# GJI K %$×LÑ&(')"%OQ)R N %$aS Z {=SU$ G #'] I I &L2x=R E! SYÿQSr') I $ X LM&S I LÑ' N }k I L NMN *')RQOJP. $L{^*'$# I N %&('$#L {^L N -ÚLM$#' I & OJ% U S]} G &g*')L G &<x G N GG ! xS&S $S RQ&S& I N R½&' ! R½$)m N G #LMOJLÑ&S I &S I &SL ')"ix G N GG ! x>1Ü' N I Z = UX .. GJI $USLM G &S$' I vS I Þ2x=R E! $USEÿQS*' I #$ Z *' X $ G &'1RQ&=R N s')L~ I *&(' . ý2þ2ÿ G K L 'R N %&('v" I LÑÿ½R N %&(')$û$#L Z %$#'9 G & v#I O I "äm I &2x=R ! $ "%#LÑÿ½RQ&(' U X Guò U x G N GuEG ! xS .zýTþ2ÿ } G NÑN H1tf& ! RQ N %RUR N G $;SQ G & v#I O(R½LM$ G & . RQ&SR N s')L I GJI } G S I 5}k I L NÑN r'RQOJ*$St. } G MN N %&('-1 %$]' I &S I &SL ')" NÑN > 1 %&(' N %$. ! $S ÿJ*') I $©$ G &(' G & v#I O I "*$S{ q¤*$ GJIS! N %$ (λ1 , λ2) $ G &(' K LM*& $SLMS*&'L~ I *$ N G $n I ; I '2x=R E RQLÑ$ N LM&(ÿJ*$#;& %$]'©ÿfRQL³ I *&1OJ"*&S"%R N t GJI $S"%$#LM G &S$RQRu*'"%LÑ$* N *$ ! R%ÜS%$ G K LÑ')*$¤S%$2x=R ! $ S ÿJ*' I #$-S %$ λj $ GQI $ N Rur')L G &%$2x=R½&SOJ %&('$1S GÚG G &&S"%*$St ¤ *$ ! GJK N " R')L~ I *$ G &('1"*'"a G &S$#LMS"*"%*$UÿJ*$ N S" KSI '1 I $#L~ N *' G &(' ! G I L ' %$ ')Rÿ½R I ò')n%$ L !hG ]'RQ&('$S{Dm G *&%* ! RQr% I m S9Ü]t = G LM&gRQ#"û*'H{ *&(')ÃR I '*$S{Ü]t R I N Ru . & GJI $ #%&(ÿ G s G &S$+m N GJI ÿf)R½OJ t[ yS ±
(27) !HGJI I &û !hG $" E G S*&Sr'aS"*')RQL NÑN "_Si%*$')S2x&SL~ I *$21t=Å N $ G &(' ! R½Ú ! N EG &('"Q I N !hGJI λ ∈ C\R− L & s R I I &S GJI I G K LÑ'%$®$ GJI $ N Ru*'L G &%$SL»h" GG ! xSLM$ *$ N G R I Ät I RQ&S ! Z %$#' N LÑ&S"R½LM$R K N u{wu %$#' f m f SLM#aRQ&=R N s ')L~ I *&(' G & v#I O I "VmY$R ! R½#')LÑ ∗ N 2xSR E λ N LM&∈/"RQRLÑ− ∪ZNJ∪L N 1/N & s Ri I I & G K L ')ut I RQ&S. λ ∈ 1/N∗ Q{ L N *$#';RQ&=R N s ')L I %&(' G & v#I O I "#m I &%2x=R E! 1 I 'R½&' N %$·ÿ½RQ#L¥R K N %$ x S N R¢} G Z1 + εy1/λ ∂x∂ RÿQS ε ∈ {0, 1} N ¶%RQ$ λ ∈ N∗ %$#'Ü$#L L N R½LM *& ! % 1 N N ! N u{ *' y 1{P$ G ]')i I L &¸sÔR I P I G K L ')*$StYq G #$y I λ ∈ R− R1$L ' I R')L G &v& %$#' ! RQ$aR I $#$L®$L E - I & !hG LM&('S-ÿ I r} G N ®t ÆÚL λ *$#'YLM#)R½'L G &&S N { Z %$]'} G NÑN %&(' N LM&"RQ#LM$)R K N { RQLM$ N R ! "*$%&g%U ! *'LÑ')$LÑÿfLM$# I #$ ! I '? E ! S2x%V%*'#') / N LÑ&S= "R½LM$R½')L G &vS G &(ÿJ%#OJ%t ¤ %RQ$S{ N G LM&v*' G LÑ&S$¤"*'"¼RQ&=R N fs $" K L NMN R a %&(' ! RQ t "* f Á R½y G r' l t ¤ t G G s bSs b Yj
(28) "%$ G N I Q{ R_&S"RQ& E G ! xSLÑ$ R %$S (C, 0) {@m N R$ I LÑ'SY')Rÿ½R I & G & G LM&S$" N "*O(RQ&(')$_S ¤ t°ÆfLM%OQ N m. ')RÿJ%#$ N %$aSL»h" GuE . %& uµ¥ 1 R " N L G #"%$ ! RQÜÂØt t #v I & G SRQ&S$ N %$;RQ&S&S"*%$ ¡ ¦ !© i0²
(29) tgq G #$y I λ *$#'D)R½'L G &S& N { GJI K LÑ%& Z %$]' N LÑ&S"R½LM$R K N u{ GQI K LM*& L N %$#')} G NÑN *&' G K L 'R N %&('a"S I L ÿQR N %&('¢m I & *' I & $ I N.
(30) S%$ G g N *$S. = G LM&gRQ#R " f R I N Ru G & ! R½ N * )R 1&½ I f G N LM&"RQ#LM$)R K N *$ λ ∈ Q∗ 1-t RQ&S$ N i%RQ$a I &½ I f G N {B%*$ G − X0 := xk+1. jÕ. N . λ = 01a*'S1$# NÑN %$×"%$ G S& &=R½&'%$& G & g N *¶$ } G N $¼$ G &'_ G &S&S"%$ ! RQ. ∂ ∂ + y 1 + µxk ∂x ∂y. RÿQS (k, µ) ∈ N∗ tÛÜ]t R I N uR rê5Í!
(31) R«*&S$ I L ') ! GJI ÿQ"æ I I &E2x=R ! S 'Õs ! &½ I f G N * $#' RQ&=R N sf'L~ I * &'# G & v#I O I "'m I 5 & 2x=R E! S N RØ} G . . ¦gt¹¦gt 1. Z := U X X := X0 + xk+1 R U (0, 0) = λ2 ,. ∂ ∂y. ÿ #&%!')(*Yÿ*+!þ ,u&þ #.- .þ /!ýTÿ N G ! xSu{ N G LM& *' I &SL~ I t" þ2$ !þ Yþ*$#' I & OJ* ?Y*þ& ³ÿ S#gÿ } G &r'ý )L Gg&aÿ x G gGÿ rÿ./B?G-ÕþQÿ9;3- ÿ./E9>ÿA2ÿ$H.-ýTþIA&#ýJ?G-ëÿQÿ9;/³ÿ>#2þ.-@- þLK 9wýJ( þ = N I $#"S% a %&('S{ l t®Á R½#')LÑ&S*'*' l t f = t / R LM$ b ¨ u ¨ ©E
(32) *& £ ¥ G &('P G &S&S" I &rRQRu*'"%L f $)R½'L G &ÃS N R% N RQ$$#1RQ&SR N s')L . I U I & ' N }k I L NMN *'R½OJP%& '% Y LÑ&(ÿQR½L¥R½&'$V} G &*'L G &S& N $?RQ$#$ G %LM"*$Qm N x G N G & G LM¼ I k} I L NMN *'R½OJ ! RQ S%$DRQO Ig *&'$ S×&=R' I #V G x GG N G OJL~ I H1tJÅ N $ G &('D*&S$ I L ')_"*'%&S I %%$Ü')Rÿ½R I E R I %k} I N L NMN *')RQOJ%$"%$ G &S&=R½&'$D& G & N LM&S"%RQLÑ$)R K N %$ b ¨ )u ¨ Í
(33) r'H{%& ºB{(ÂØt(ÂØtBÙPLÑ&'y2x³s *' ÆÄt Á7t M G G &SLM& OYj
(34) G &('S"r')% LÑ&S"Ø G! N r') %&(' N R N RQ$$#LY%R½')L G & S*$POJ% *$Sr2x=R E! S_ÿQSr') I $DLÑ&S I LÑ$)RQ&('*%$k} I L NÑN r'RQOJ*$Stuq¤ I LM&(ÿ½RQLMRQ&(' %$]' G &S$]')LÑ' I "aS_S I %} G LM$ ! N I $ LÑ&(ÿQR½L¥R½&,'?@' $ G LÑ'LM"×"r'RQ&(') G &$)Ru*"%]m% N R½$$L=% N PÍ') E! $RQ U } G &*'L G &&S N $V I !HGJI N Qk} I L NÑN *')RQOJ{ N R I ' N R N RQ$$#LY%R½')L G &û I ') E ! $ ! LM*¼r' GJI G &S&=R½&' N ¹x G N G & Gu LÑutfÇ &Ã$ LÑ&S$ ! LÑ)RQ&('aS'S2xS&L~ I %$ N OJ" G "*'L I %$ûRQ&SR G O I %$S{ I ;t Å2¼t Á %$yxg2xS%z(s Rup G ÿ½Rm*' Æļt Á7Tt M G G &SLÑ& bdcE OYj
(35) G &('ûR½&S& G &*" %& ¥u¦¦³¥-Rÿ G LѼS#%$$#" I &S N R½$$LYR')L G &v$L L N RQLÑ !hGQI N *$&½ I f G N $ N G $n I k = 1 t GJI $ÿ GJI S#L G &S$ L~%L ! #"%$#%&(')* I &S R I ')# R !S! G 2xSEOJ" G "*'L I u¤{ S"*ÿQ N GJ!S! "% ! RQ)R NÑN N %&('r'1LM&S"/ ! %&SSR a %&('S{ ! * *'')RQ&('Y GQK ')*&SLMS*$YLÑ&(ÿQR½L¥R½&'$Q} G &r')L G &S&S N $i G ! N "*'R½&'* I ò ÁÃRQ#'LM&Sr' f R LM$tq® KSI ' N N ! LÑ&%L ! R S5**'' 'yx% $#Ã*$#'ESÔ G &S&% I &S9 RQ$$#LY%R½')L G & G ! N * ')û9*%$2x=R ! $S{ !HGJI 1' GJI ' (U9+)/B:V9 N N %$#2x=RQ&SOQ %&(')$aS GfG # G &S&S"*%$?RQ&=R s')L~ I *$St k ∈ N∗ { ¤q *$×/ Ru%LÑ&S%$_SØ**'#') "*'yx G SU$ G &('×$#LÑ' I "%%$×=RQ&S$ N %$a')RÿQR I à S ¤ t ¤ Sx #LM$#' GJ! Sx *S{ = °t Á RQ#SS# L~ ! $-S *' ¤ t GJI $#$%R I å =® b ¨ uvj { ¥u¦¦¦
(36) Gò N %$1R I ') I $-#"%$ G N ÿQ%&(' N R9 N R½$$LYR')L G &«S%$Ø2x=R ÿJSr') I $LM& I LM$RQ&(' I & 'k} I L NMN *'R½OJ N LÑ&S"RQLÑ={ %& ! #L RQ&(' N ! GJK N *& ')* %$× G x G f G N G OJLÑD N R½'LÑÿQut ¤ NMN f *L$#_R %&S#m N R#"%$ G N I 'L G &U I &Sa"S I R½'L G &%x G E G N G OJL~ I { *$#' f m f SLM# I &S N "S I R½'L G & S RØ} G - . ¦gt¹¦gt·¥1 X · F = G, N N 2x=R ! X RQOJLM$#$)RQ&(' ! RQ¤S"*LÑÿ½R½'L G &Y$ I %$$"%#LM*$} G NMN %$®*' G &ÿQ%#OJ%&(')*$SEt W_&U$ IS!S! N " %&('RQLÑ K G I N %$ !HGJI N R% N RQ$#$LYR½'L G & I 'R ! $S{Gm N Rur')L G & S N L RQOJ× X· } GJI &LÑ'aR N G $ I &Ã*$ ! R%YS E Ñ N N ! y*$-S%$-$zs "*'LÑ%$1 I }k I L r'RQOJ FX I L;%$ ! *'%&(' I &S } G ') E ! $US X t R {©& GJI $ N N N N I G G G K I I G G E G G I "% = LM &S$ R# R½$$LYR')L & L 'R S Z m &S;" R½')L &Øx OJL RQ$#$ G %LM"*Ûm X t *&SL% *&('H{. N M N N N s
(37) Ç#t R I ¨ {Y¥u¦¦ R-$ ISK $#'R½&'LM *&('OJ"%&"%)R LM$#"Q%*$ "r'Tx G S*$#m N RU& G R N LM$R½')L G &%} G NÑN _S%$ ! *#' I K R½'L G &$ 2xSR E ! $ ¸ÿQSr') I $< I R½$L f x G G O* &S%$ X0 { $RQ&S$Ô$ IS!!hG $#% N R«& G & f & I NÑN LÑ'" I N N N ! LÑ% v *'StDq®%$ G I *$S R[ RQ$#$LR½'L G &<} G NMN U$ LÑS%&(')L=%&('*& G #mÔ%$ ISG ')LÑ%&(')$ I & $ IS!S! N " %&(')RQLM#]m N L RQOQ×S N R1"%L ÿ½R½')L G & X0· t N N G N G OJL~ I U%$#']} Ru%L N !SI LM$y I G &ò$ R % &SRQ&=R N s f I RQ&S λ∈ / R− { "r' I SS "S I R½'L G & x G ')L~ I *&(''m N " I R½')L G & Z1 · F˜ = G˜ {¸ I L·$ "*$ GJI ' L a "%L¥R½' %&('U°L N -Ú LM$#' I &S $ G N I 'L G & $#L *' $ I N %&('a$#L G(0, t I R½&S ˜ 0) = 0 t GJI $*' GJI ÿ G &S$_R N G $ N *$"%$ I N ')R½')$Û N R½$$L I %$aS N LM&S"%RQLÑ$)R½'L G &B R X cE å c ¤ N N I G G E G G I I ! I " R½')L &Zx OJL R}"*'" "*' SLM"* RQvÁ7t %#'ySx LM* r' t *#ÿQR { u
(38) λ N G #<$y I 0 λ ÿQ"%L= +%*#')RQLM&S*$r G &SLÑ'L G &S$URQL 'Tx "*'L~ I *$1*'r I Z !HG $$n% S I & LÑ&(')"%OQ)R N ! # L~% # Gò. (0, + 0R -21& 03546/!+)78#&9;:=</ 03 9;/ 0) >#&9;3 .?@+BA C9;3 D+E')3 D:F'.
(39) jZY. SY'Õs ! N G O(RQ#LÑ'Tx L I ut! I N I *$×R½&S&S"%*$ ! N I $'RQ#{^=RQ&S$ N i%RQ$_S $# NÑN %$a#"%$ G &S&=RQ&(')*$& G & N LÑ&S"R f LM$R K N %$S{Á7t *#'yxSLM**''oÛt¸q G )RHs c C[Üj { u ¡;
(40) G &'Q G! N r') *&'LMS*&'L=" N %$ GJK $#' I r')L G &S$im "%$ GJI S# N " I R½')L G &tÇ &B=&{ N G $y I *$#'LM#)R½'L G &&S N &S"%OJR½')L} { N [%RQ$ I &e2xSR E!G K LÑ')R N *&(' N LM&"RQ#LM$)R K N URv"*')"-')RQL ')"1=R½&S$ å ®= b λ¨ uvj {D¥u¦¦¦
(41) t R RQ&S$ N R ! N IS! RQ]'PS*$'%RQ$ N *$ GJK $]') I *')L G &S$m "%$ GJI S# N " I R½')L G % & x G G N G OQ~L I G &(' !SI *')#?LÑ&(')% ! "r')"*%$D*&'% *$;S_& G & f ')#LÑÿfL¥R N LÑ'"; N RP' GJ!HG f N G OJLÑRQz$ s E! ' G ')L I P I }k I L NMN *'R½OJ?$ GJI $ f v Ru*%&('Ht ¤ *$?R !S! G 2xS*$_OQ"%&S"*)R N LM$*&('aR I G &('f')$LÑ&SO I N LM* N R "rT' x G SPS*)$ %RQ)R *')"*LÑ$#')L I %$S" %#LÑ') ! R½\ Mt=2Å t=Â×#& G N Ô=RQ&$ t[ {Y2x=R ! t=ÅÅ
(42) t W?& ! # ~L * ! RQ]')LMûÃ& G ') "*' I S $*)7 R G &S$Ru%#"%Lm¸S"r')% LÑ&S% N %$ GJK $]') I *'L G &S$S N " I R½')L G æ & x G G N G OJ~L I URQ$$ G *LM"*% m I && ½ I f G N tq G #$y I N "S I R')L G & Z · F = G RQ r' I &Sa$ G N I ')L G &rx G N GEG ! xS F { !HGJI ·' GJI '2xS LÑ& ' m Z . u %$]' f m f SLÑ G &(')*& I =RQ&$ I &S[ GJI K ûLÑ&'"%OJR N S Z 1 *' γ N 'RQ&OJ%N &(% N LMRQ&(' !HG LM&(' p0 R IÔ!HG LM&(' p1 & GJI $_Rÿ G &S$ R1 N R½'L G & Z }k I L NMN r'RQOQPRQ$$ G *LM". m. ∂ ∂ t x2 ∂x + y ∂y. F (p1 ) − F (p0 ) =. GτZ .. γ. Â×LM&$L { I &S5 G &SLÑ'L G &z&S"%*$$)R½LM¾m N ÚLM$]')%&g%ÔS F %$]' N R & I NMN LÑ')" S N LM&(')"*OJ)R N Rγ G · τZ {$ I ' GJI 'sB N γ 'RQ&SOQ%&(''m Z . $ G L ' p0 = p1 1t ¤ ! %&S=R½&' **''# G &SLÑ')L G &1*$#' LM&$ I Ô$)R½&'a$L G &-$# G &('%&(')_ LM&(')"*OJ* $ I N %$ s! N *$+ G &('%& I $û=RQ&$ N %$')R v Sr' G LÑ%$ S Z Ü%&pOJ"*&S"%R N *%$ '))R v S *' G LM#%$$ G &(' $L ! N %&('% G &&SÚ%${ = RQLM$ N L R½OJûS Z· %& ')RQ&(' I ×S"*LÑÿ½R½'L G &-*$#';SV G SL %&S$#L G &-LÑ&g=&SLÑut GJI ÜS"S*LÑ# G! N *') *&(' N L RQOJS Z· L N & GJI $¢}R I '×OJ"%&S"*)R N LM$#% N RE& G ')L G & S]2xS LM& ')RQ&SOJ*&('m W?&9s! N R½$ns E! ' G 'L~ I S x2 ∂x∂ + y ∂y∂ t % NÑN S' 2xS LM& 'RQ&OJ%&('×RQn$ s ! ' G '~L I tÄq¤R & I NMN LÑ')"P Rγ GτZ $ I a' GJI ' N N s! aRQn$ s ! ' G '~L I γ SrÿfLM%&(' I % & *LÑy' %#¼ ÚLM$]')%g& % !HGJI I &$ G I ')L G & N G u G E G ! I I G x S x û $ & ÿ M L # $ M L = & Q R Q O ûS (0, 0) t Å N *$#'E G &Ô%$#$*&'LM N SÔ$Rÿ G LMS"%LÑ N R ' GJ!hG N G OJLÑ F RQn$ s R ! ' G '~L I I }k I L NMN *'R½OJu t RQ&S$ I &SD$#S G &SS ! RQ]')LÑ;& GQI $"r' I SLÑ% G &S$ N %$ N LM*&S$©*&(')DS" I R½'L G ] & x G G N G OQL~ I *' G & v#I O(RQLM$ G & SQ2x=R ! $;S?ÿQS*' I #$StYq¤RØ N RQ$#$LYR½'L G & I ' ! $D*$#' I & ! GQK N N LÑ&S"RQLÑP! G & v#I O I * Z m U Z $Y)R %&SPLM *' %&()' m "r' I LM% N " I R½')L G + & x G G N G OJ~L I |y|. Re(x). Im(x). Z ·F =. (0,0,0). 1 −1. U. qR N RQ$$#LY%R½')L G &-S*$}k I L ÑN N r 'RQOJ*$ ! I ';R I $#$LG*'aS"%L ')a%& ')* %$ "S I R½'L G &%x GuEG N G JO L I u{ RQLÑ$ %*'#')YS%#&SL~* . ∂ X0 + R ∂y. . ·F = −. R y. %$#' ! N I $_$ ISK 'L N S ! R½ N R ! "%$#%&*US N R ! %]' I K R½')L G & R S*$×S I 9Sã½')"%$?S N "%O(R N LÑ'"ut R ! N I $S{=L N & *$#' ! RQ$a"*ÿfLM%&('× G &S&S% I &Ã$%&$S{ i} G NMN %&('H{gm I & $ G N I 'L G &ÔS**'' " I R½')L G &ò N $S G &S 1K ! I '_'y*$ K LM%&9*' "% GuEG ! xSt Ü?LM$]' G #L~ I *&'S{ N "S I R½'L G &9x GG N G OJL~ I ×%$#'×LM&(')#LM&S$nS I *&' N LÑ"%'m N R% N R½$$LYR')L G & G K L 'R N S%+ $ 2x=R E! $û ÿJ *') I $ tÄ GQI ')} G LM${D%&pOQ"%&S"*)R N { G & I ')L N LM$# N " I R½')L G &¯x GG N G OJL~ I RQ$#$ G %LÑ"%æm NMN ∂ tq® ! G %"*S"[ I û& GQI $ ! #"%$*&(' G &S$ X0 r'1& G & ! RQ$% vRQ$#$ G %LM"*ûR I 2x=R E!z! %]' I K " X0 + R ∂y N N N ~L %L;$ 1K &=R½' I *' ! I '1S$ RQ=R ! '%-*& ! RQ#'~L I LÑ% R I RQ$-%$r2x=R ! $1vÿJSr') I $ &SL N !HG ')*&'$ GJI}! N I $S"%OQ"%&S"*"%$ t ¤ N R ! * *S' {*&}$ LÑ&S$ ! LÑ)RQ&('YS*$Y'S 2xS&SL I %$ S othq G )RHs !hGQI N "S I LÑÿ½R N %&*. Ñ N N N N [ j 5
(43) } G aS %$;$LÑ&SO I RQL ')"%$ I $ ! LÑ=R %$ {Ú¸ *&vS"%#LÑÿQ%¼R I $$#L°S*$Û} G %$Ü& G R N %$ÜS) G & v#I O(RQLM$ G & } G NÑN s ¨
(44) rH' { !hGQI N %$ 2x=R ! $ !HG $$#"%=R½&' I &S¼LÑ&'"%OJR N ! # ~L *Ü I r & %%]'RQLÑ& Õ' s ! u {Q%$ } G *$ N N & G R %$S G & v#I O(RQLÑ$ G & RQ&SR s')L I u t.
(45) h. Ì BÈÆa`ÁÂ!ÁÊGb`LÇÆ+ÅuÂæÇc^BɶÂÄÌ5d!eÆ s]f Ñ cfehg ¨ gijHeZ¤cæ± ¨ gf!° ¨ ww®c GJI $# G &S$LÑS"%#% G &S$aS I Ô'Õs ! %$_S2x=RQ&OJ %&(')$_S GfG # G &S&S"*%$ JjheBiHh² ¨ i Ñ jheZÒkj;fc =L N $ RQOQLÑ'aS*$?SL°» " G G ! x LM$ %$ K #"%$S{G I L®$ "%L ÿJ*&'. j¿. h. ¤ %$¶2x=R E! $¼RQOJLM$#$*&'D$ I N #}k I L NMN r'RQOQ F ! RQ ! % 1I ')R½')L G &E%$Û}k I L NÑN %$Ü*'D%& ! "%$#%]ÿQR½&' N ! $S X Ú$L X1 r' X2 {S"S*LÑ'$¼$ GQI $ N R]X} G ! "*& G R N ×S R I N Ru{$ G &('a"S I LÑÿ½R N %&(')$ ! RQ ') I &SYR !S! N L~%R½')L G & K #"% R N G $¶* NMN f %L*$#' I &S G & v#I O(RQLÑ$ G &¸t J jheBiHh² ¨ i Ñ jhe g ¨ e²^cfehg
(46) ikc!±±kc =L N $ R½OJLÑ'%$_SL»h" GG ! xSLM$ *$D'R½&SOJ%&('LM N $S{ I L®$ "%#LÑÿJ*&('. ] _^. N (x, y) := (x, f (x, y)) .. F (x,y). T (x, y) := ΦZ. (x, y) .. ¤ %$_S%#&SLM*$a$ G &(' GJK '%& I $_%& E! N RuR½&' N RUÿ½RQLMR K N t I OJ* PSié G 'Vx G N G EG ! xS ΦtZ : = etZ · Id. ! QR I &S $#"%LÑ} G NÑN GJI¸I &Sr} G &r')L G &æx G N GEG ! xS F t ¤ % $2x=RQ&SOQ % &(')$YSr GfG # G &S&S"*%$ $ G &('S*$$ns "*')#LM*$P I }k I L NMN *'R½OJ I LgÚ%&('H{R IæEG LM&S$_$ I P %$P$*' I # $S{D2x=Ru I }k I L NÑN YS N N N F tH& G &(')*)R R1# R½')L G &[} G &S=R *&')R T ∗Z =. 1 Z 1+Z ·F. I hL } GQI &SL ' I & ! LÑ% !HG &('?*&(')Y"S I R')L G &¾x GuEG N G OJL I ×*') G & v#I O(RQLÑ$ G &¸t^ÆR I }$L F = cte { %%$V2x=RQ&OJ %&(')$_S GfG # G &S&S"*%$a&S*$ ! Sr')%&('R I I &Si} G ') E! $aS Z t q¤*$a$ G N I ')L G &S$D N "S I R½'L G &[x GEG N G OJL I ?R $ GQK ')LÑ%&S&S*&('?*&ÔLM&(')"*OJ)RQ&(' N $ G & UK N N G &SO-S 2xS LM&S$PLÑ& N I $=R½&S$ N *$¢k} I L NMN %$× FZ t %$ N G #$S{ N " %OQ%&*1Srs! N %$PSRQ&S$ N *$Q}k I L NMN %$?R *&S I &S GJK $#' I r')L G &t ¤ %$]' !HGJI n IG L®L N %$#'?&S"%%$#$)RQLÑ "*' I SLM* N RU' GQ!hG N G OJLÑ×S*$V}k I L NÑN %$t ² ic ¨YnÑ m ° § gj=g
(47) i0¤ c Ñ cBQ gj@ ikc!±k± cGª l j § jÄk± jGH Æ G LM*&(' r > 0 { θ ∈ [0, 2π[ r' 0 < δ ≤ 2π { G & "= &SL ' N ÿ>&þ #.-Õ.þ /Bgý oTpSCý A S?SLM#Sr')L G & θ f{ GJI ÿQ%#' I δ *'_S)RHs G & r V (r, θ, δ) :=. . δ (x, y) : 0 < |x| < r, |arg x − θ| < , |y| < r 2. . .. *L 'a$ GJI $ N RØ} G S R I N Ruu{ I &¾2xSR E! SPÿQS*' I #$×S'Õs ! &g½ I f G N LM& I LÑ' I &+}k I L NMN r'RQOQ N N NÑN FZ $ I rD × rD G &(' G & ! I '_S"S*LÑ RU' GJ!hG G OJLÑ I $ I - . 1 N RUS G LÑ' N N $#" ! RQR f {x = 0}NMN *$#' I &SP$" ! RQ)R')L%PN R½$$ G %LÑ"%im R ÿ½R I ! GJ! N # λ2 S Z1 tW_&S N ')L%*$#' I &Q}k I L _S I L$# ! G G &SOQ×%& I &P$ I z}Ru%RQ&SR s')L I Q GQIS! RQ&(' G #LMOJLÑ&Sut . ¥Y1 %&ûOJ"*&S"%R N L N & Ú LÑ$#') ! RQF$¼ZSP$#" ! R½)R½'L~*RQ$#$ G %LÑ"%im N RYÿ½R N I ! GJ! # tSÆÚL¸ *$#' !HGJI ]'RQ&(' N 'RQ${ G & ! I '$ IS!S!HG $* . I L ''ma2xSRQ&SOJ*×S] GfG G &S&S"%*$ N G R N %$T1¶0 I R = yR˜ r' G & SLMR I Z %$]'_SP'Õs ! J jhe@hÓ c^² cfehg t^ÆÚLÑ& G & G & SLMR I L N %$]'?'Õs ! ©iëÓHc!²^cfehg t . ³1 N %$¶k} I L NÑN *$S{gx G LM$ { $ G &('a')RQ&S$]ÿJ%#$*$Qm N RØ K R½')L G &qPÍÿQ%]')L~%R N JQ dx = 0 t {x = 0} = . µ1 !hGJI Ô $R *&' ! *'LÑ'H{ r>0$ I E . R³1 N *$ k} I L NMN *$¼S N R1#%$]')L*'L G &ÔS ! N %&(' G &S&S-Ú %$St FZ m ' GJI 'a$#Sr') I V K "$ G &('_$L E . K 1 $L %$]'_SP'Õs ! YSLÑÿQ%OQ%&('H{ N %$¶k} I L NMN %$¼ ! N *&(' G &&SÚ %$t Z FZ $ G &('?$#L . H1 $L %$#'1Sv'Õs ! + G &(ÿJ%#OJ%&('S{ N x G N G & G LM RQ$#$ G %LM"*5m N RÃS I Ú L v$" ! RQ)R')L%v" f Z ')* LM&S N R ' GJ!HG N G OJLM ¸x G LM$V%r'')-$#" ! R½)R½'L~*u{ N %$Vk} I L NMN %$_&S G &'LM*&S&S%&(' ! R½$S s! N %$P$#L µ ∈/ R tÄq G $n I N LM&(ÿ½RQLMRQ&(')} G N µ %$#'"% N { N R' GJ!HG .N G OJLM ! I 'ir ') ! N I $ GuE ! N Ú u©t IòK LM*&}R I I &Sk} I L NMN 1& %$#' $L E ! N %&(' G &S&S- µ ∈ Q r' N ¹x G N G & G f N N N LMÔ%$]' LM&S"%RQLÑ$)R K >1-{ GJImK LM*& R I ! I $ I & & Gu1 K ÔS"*& G1 K )R K N ÔS9k} I L NÑN *$-& *$#'.
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(50) g ikjheZ®j@°}j@±kj@²Hi0¤c@ª Ç & %$]')#L~*'L G & m I &)k} I L NMN u{ N )2x=R E! Z %$]'¼"*O I N LM%a G & ! I ' N _*S*$$#% N G R N %&(' $ I G N G OJL I Z · F = G $S "S*LÑ'_=R½&S$#%%$V GfG # G &S&S"*%$ q "S I R')L G &¾x GuE. jÝ t. ∂ ∂t. ∂ f = g. ∂t. q¤*$?$ G N I )' L G &S$¼$S GJK 'LM*&S&S%&('×R N G $¼*&ÃLÑ&'"%OJRQ&('. t. f (t) − f (0) =. Z. F (M1 ) − F (M0 ) =. Z. Z. M0. gdt.. R RQ&S$ N *$ GfG G &S&S"%*$?¸ G #LMOJLÑ&Su{ G & GJK 'LM%&('aS*$?$ G N I ')L G &S$ N G R N % $ Gò. γ(M0 , M1 ). *$#' I &92xS LM&û'R½&SOJ%&(')m. I L® N LM. 0. GτZ γ(M0 ,M1 ). m. M1 tYq¤R. wý þD- þ.(*Yÿ. K 9 .(. τZ :=. $)R½'LM$n}R½LÑ'#m N R1# N R')L G &. τZ (Z) = 1,. ' GJI V' R Ga dt ∂t∂ = 1 t QR &S$ N 5R½$ES5}k I L NMN *')RQOJ%$-Ô'Õs ! &½ I f G N ·{ L N %$#' H! G $ $#L K N ¾2x G LM$LÑr G 9 G &SSL ')L G & LM&SL ')L¥R N M0 := (0, 0). *'Ü LM&(')"*OJ* GτZ N N G &SOPS*$2x LM&S$ RQ$zs E! ' G ')L I %$ γj (M ) G &S&S"%$ ! R½ N Ä xS" G y aÂØt = I LM$y I R I f %$$ I $ûS Vj N *$a}k I L NMN %$ $ G &'ûRQ$ns ! ' G 'L~ I *&'E$L E! N %&('a G &&SÚ%${ N Rä} G &r')L G & M 7→ R K LM%&ES" S&SLM N G #$y I N LM&(')"*OJ)R N %$]'¶ G &ÿQ%#OJ%&(')t^ÆÚL G &E%$$RHsJP "*'%&SS#Q%r'')} G & f * # $ ' Gτ Z ')L γG (M &<m ) N I &SL G & Vj ∪ Vj+1 { N - ÚLM$#'%& * I s! N RQ$ns ! ' G 'L~ I γj∞(M ) R %&S I &S GJK $]') I *'L G &t ¤ $ G &('?%&5}RQLÑ' N %$$# I N %$ GJK $#' I r')L G &S$ I LR !S! R½)RQLÑ$$*&('Ht j y!°}c ª6z /{?G-@-Õþ}|ý&A8+)/B?ëýTþ r > 0 { l ®xffG j. . 1 ?G:Äþw?~ÿ.- þ/{3¸þ ÿ9;: /B-2?u9;3K 9wý.( þ.:G:~þ ˆ |>:8A8</')-@?u9;3 V¢ÿ.?þ.-hÿ>þ./B:~þ.( þ.3-ÿ.? #2 þ </{?Ûþ2ÿ.-A8</B?G,;'):~þ.3-6|U:8 'Epÿ9;: /YFþI#&9;3,uþý2v!þ.3#2þ$+! þ2ÿD ?G3-sAuvuý'):~þ2ÿ . ¥1. (∀M ∈ ∪j Vj ). Fj (M ) :=. Z. G(x, 0) = o(xk ) {. GτZ . γj (M ). gÿ 2þ wÿ #&%!'E</Gþ þ2ÿ.-T')/ÿ2ÿ.?hÿ9;: /{-@?u9;3+!þ:8A8</')-@?u9;3 þ.-=9>ÿ2ÿ8+!þ ˆ #&9;(}( þD+BA.,uþ.:V9&EYþ.7 ( þ.3-6'wÿ.1;(*5-9;-2?@</Yþþ.F 3 j 6 îþ2ÿ.-S:F'%ÿ>þ./B:~þQÿ9;: /B-2?u9;3+!þ0:8A8</')-@?u9;3F %9;(U9;:V98v)?@</Yþ$</B?ÿ9;?G(0, 0) %9;:V9;(U9wý%Yþ]þ.-\p.9wýJ3A2þQÿ./!ý |'E+E+)?G-@?u9;3~+g /B3¸þI#&9;3gÿ.-Z')3-Õþ@ýC2ÿ Vj . ³ 1 :F'ÿ 9;: /{-@?u9;3IK 9wJý ( .þ :G:~þ ˆ #&9;3,uþý2v!þQÿ.?Ûþ.-ÿ>þ./{:~þ.( þ.3- ÿ.?S:~þ2ÿ ÿ>þ'ýTþ&#&9;:G:~þ.3- #îþ2ÿ.-@7R|)7R+)?ëýTþQÿ.?Ûþ.F Fj ÿ>.þ /{:~.þ ( .þ 3- .ÿ ? +E')3 ># >#8'. ∀M ∈. ∪j Vjc. . Z. γj∞ (M ). GτZ = 0 ..
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(55) 7 c ©Yª " þ}#&%!')(* Z þ2ÿ.-5K 9wýJ( þ.:G:~þ.( þ.3-6#&9;3 J/)v)/A>| . Z0 := P (x)X0. þ2ÿ.-6/B39;: 13;( þ>+!þ>+!þuvuýCA>')/t5: /³ÿ r' P #&%!')3Bv!þ.( . þ 3-I ÿ +!>þ #&99w8ý +B9;33A2þ2ÿ '),uk þ&# 9;. x 7→ αx. & JG K .'LM%&(' N P ' ! $ & G R N ÑL $" N "S%#LÑ' I g¦ t·¦Bt 1×. P. P (0) = λ t k α = 1t. þ. Ûþ2ÿ.-T/{3?@</Yþ . .: /{?G78#.?. @ý 2ÿ !þ2ÿ. |:8 'B#.-2?u9;3U C +. m ! RQ]')LMP I S"rÿJ N GJ!S! %&('1EÄ©RHs N G YS N I &SLÑ'". U. =RQ&S$. U (x, 0) = P (x) + o(xk ).. Á RQLM$# Ga G & ! I '' GJIwv#GJI #$a"%$ GJI S#UR½&=R N s'L~ I %&(' I &S " I R½')L G &Ô I 'Õs ! X · F = xk+1 G(x),. Z. *$#'?RQ&=R N s')L~ I *&('# G & #v I O I "'m I &¾2xSR E! S N RØ} G . P& $ I!S!hG $%RSRQ&S$ N R1$ I LÑ')i I . ˜ P (x) + y U (x, y) X .. ˜ y). U (x, y) := P (x) + y U(x,. Ç &B=&{=L N }R I 'a& G '%# I N i 2x=R½&SOJ %&('?S GfG G &S&S"*%$ ˆ ◦ Tˆ ψˆ = N. ψˆ. ! I '_$S "S*LM#. = G LÑ&RQ#" f R I N R ¼%&(')# r' {½*' ˆ X X T # G &S&"%%$ Nˆ "*')RQ&('V K "0{HL N "%R N LÑ$R I q RQ=R ! 'R½'L G &E I RQLM$ G &S&S *&' ! "%"*S%&('VUm S*$ GJI ÿQ%]')$$*' G LÑ N $ N R½$$LYR')L G &v'RQ&SOQ%&(')LÑ NMN ut. ˆ %$]' N RV G & v#I O(RQLM$ G & K #"%S N .N P X m U X i2x=RQ&SOQ %&('×] GÚG P X0 *' P X 1t. Gò. G & v#I O I ¼')RQ&SOJ*&'LM NMN *&(' $$L I &] G & v#I O(R½LM$ G & *&(') K #"%$ G &(')LM*&(' N R' N }¤S N R.
(56) Ì BÈÆa`ÁÂ!ÁÊGb`LÇÆ+ÅuÂæÇc^BɶÂÄÌ5d!eÆ jÕó ÃjGw° ±i g
(57) ijHe c!QgjGic!±0±cGª × N Rä=¨ & SÑS¨*$ûRQ&S&Ñ"%%$ º¦g{;Á7tÜ I p I x=RQ)RB{DÄitTL 1I R*' Äit¼ÁÃR½' I SR G &('v*&' ! LÑ$ N "*' I S $nsf$#'" R½')L I S%$;$LÑ&SO I N RQL ')"%$ #"% I L ')*$DSVk} I L NMN r'RQOQ%$ c C¡ i )b ¨ g
(58) Ú{ R KHG E I & !hG LM&('ÜS?ÿ I } G N *'U%&S$ I LÑ' *&z$S R½'')Ru2x=RQ&('rà m "*'R K N LÑ N -Ú LM$#'%&* Sk} I L NMN %$$*' G LM NMN %$ !hG $#$"*=RQ&('r Gua S"*ÿQ N GQ!S! *&('¼RQ$zs E! ' G ')L I I &S_$ G N I ')L G &} G NMN ; G &S&"%utBP Ù C¢u*#m'*%$ ')2xS&SL I %$DL N $ G &(')#%&(' N I G & ! I '# G & v#I O I * X m X0 ! RQ I &52x=RQ&OJ %&('aSi GÚG # G &S&"%%$ K " Njcn GJI Njnc {'RQ&OJ%&(' m N LÑS%&(')L ')"{SR I f S%$#$ I $_S2x=Ru I & %$a$*') I $ ] _^. Vjcn. . %$]' N R1" I &SL G & Vj. Vjcn ∪ Vjnc 1t. Vjnc. π 2π := V r, (4j − 1) , 2k k π 2π := V r, (4j + 1) , 2k k . R RQ&S$ N R1$ I LÑ'*P PQ S"*$LÑOJ&S%R N I & GQI N R I ')×S%$_$ns 1KHG N *$TP Q GJI # nc q¤2x=R E!. X0. P. cnQ2t. !HG $#$y% N RØ} G &*'L G & 1I N ')L} G H0 := yx−µ ex. −k /k. G LM&('"%OJR N ! L%#u{m¾ K #%$ G &S&S-Ú%$1$ I N *$U$#S*' I #$ LM&(')"*OJ)R N %$ ! # L~* %$a$#S*' G LÑ NÑN %$¶m% K %$# G &S&S-*$U. Vj# t·&«*&«S"%. I LÑ'S{ !HGJI . Z {S%$. Hj# := H0 ◦ Nj# . # := H Vj# R I f S*$$ I $?S Vj# *$#' C t Ω# j j. q %$ ! Ru* S*$V}k I L NÑN *$ qR% G & v#I O(RQLÑ$ G & Nj# $# ! G N G &SOJi G &'LM&a %&(' N N G &SO S {x = 0} *& I &ÃOJ% SSL»°" GEG f ! Sx LM$ Ht & ! I ')r')# ! N I $ ! #"S%LÑ$# I '* N R r'_LM&(') G I LM N R-& G 'L G &ûSSL»°" GG ! xLM$ $#S*' G LÑ N { N R½$$ GJK!v r')$)m N Ru I NMN N # R !S! R½#')LÑ%&('Ht ê f³Ò e©i¶g
(59) ikjHe ª Æ G L ' V := Vj (r, θ, δ) I &$#Sr') I K "utf& SLÑ)Ri I I & K Lx G N GEG ! xSLÑ$ ψ : V → £ iG¤Sffj@} ° jG § ®©i Ñ °}c Ñ c!QgjGikcB± $ I V $L ψ !HG $$n%S I & "*ÿJ N GJ!! *&'RQ$ns ! ' G 'L~ I ψ(V ) *$#' I & N N G ! x *& (0, 0) h{ *' y 7→ ψ(0, ˆ y) *$#' I & OJ% 11SL»h" GuEG ! xSLÑ$ S ψˆ ')RQ&S$]ÿJ%#$)R %&('x G G R½&' 0 Ht P&ÔS R½&SS%&gS &¾ I ψˆ $ G LÑ'')RQ&SOJ*&('¢m N LÑS%&(')L ')"*& x t {x = 0} BS GJI $ G &(') G &S$5 I N L R½OJ S ' GQI ' $ GJI $ f $#S*' I V (r0, θ, δ0) ! RQ I & ') N SL»h" GuEG ! xSLÑ$ G &(')LÑ%&(' I &$Sr') I S ¼LM*'L G &-r'H{³ I LÑ'#')#P m SL LÑ& I %·$ G & )RHs G &¸({ GQI ÿJ*#' I ?R I $$#L ! G 2xS N S δ I G & $ GJI =x R½LÑ')t s]
(60) j § j Ñ ikgijHe ©Yª ¥ 9;?G- Fˆ /{3¸þÿAýJ? þK 9wý.( þ.:G:~þ$-Õþ.:G:~þI</Gþ Z · Fˆ ∈ C {x, y} þ.- ÿ 9;? þ.3- F ∈ O (V ) j j :~þ2ÿ'ý2þ2 ÿ 9;(}(UA2þ2ÿ)ÿ>&þ #.-s9wJý ? .þ :G:~þ2ÿ 6¦\39.ÿ /E9>ÿ> þ </Yþ ˆ F (0, 0) = 0 .} ') ÿ AJ ý ? þ K 9wJ ý ( . þ :G:~þ 2 þ ÿ . B / 3 & # ! % ) ' 3Bv!. þ ( .þ 3-_+!§þ #&99wý +B9;33A2þ2ÿ K 9wJý ( .þ :E-u')3Bv!.þ 3-c|:8 ?@+!.þ 3-@?G-sA 1 " ˆ := ΦFˆ T Z þ. #&9;3,uþuý v! þ ¥ ? ˆ #&9;3,uþ2ý v!$þ '):V9wýTÿ ˆ ')/ÿ2.ÿ ?@ y 7→ T (0, y) F T . ¥} 9wýT ÿ </Y þ 9;3[ýT. þ (*5:F'B#2þ !'uý 9;39)p-2? . þ 3-x/B3£+)? ¨A&9;(U9wZý %B?~. ÿ ( þÿ>&þ #.-9wJý ? .þ : .ÿ /!ý ')1)')31 " ˆ F F Tj Vj j #&9;(}( þ +BA.,u.þ :V9&EYþ.( .þ 3-'w.ÿ 1(*5-9;-@?@</Gþr.þ 3 ˆ T. (0, 0). q¤×SL»h" GG ! xSLM$ Tj G & v#I O I N )2x=R ! Z R I 2x=R E! 1 ˆ Z R I f S%$#$ I $ Vj tÚÂ×LM&$L {*&+ G f !hG $RQ&('RÿQS Nj# { G & ! I ') G ! N "r')* N "*$ I N 'R½'_S]Ü I p I 1+Z· Sx RQ)FR f PL 1I R f ÁÃR½' I SR !hGJI N %$V2x=R ! $ SPÿJSr') I $ .
(61) ©ª. å Gj
(62) j@±± ¨ iI
(63) c<ͪ . 1 .:þw?~ÿ.-Õþ0/B3«+)? ¨A&9;(U9wý%B?~ÿ.( þ)ÿ>þ&#.-s9wýJ? þ.:x')/B7R+!þ2ÿ2ÿ./³ÿ +!þ. #&9;3 J/)v)/')3-. Vj. PX. |. Z. Äÿ ý. c.: A&# J?G-. F. Tj := ΦPjX. uþ. '), &#. X · Fj =. 1 1 − , Fj (0, 0) = 0. U P. . ¥1}" þ}+)? ¨A&9;(U9wýZ%B?~ÿ.( þQÿ>þ&#.-9wý.? þ.: # #&9;3 J/)v)/Gþ ')/B7R+!þ2ÿ2ÿ./ÿ}+!þ :~þ2ÿ#&%!')(*Yÿ Ψj := Nj# ◦ Tj Vj# þ.- Z0 Z R RQ&S$ bdcE OYj
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