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H
t
JR @ mP?RAT Tm
P wR% @ QLf h5h Pn3, fm#&.4 4 l! 10fp<
=?>A@ ' mP?IAT
τ
B9 @ W@ _.R K gD KI*BgDy_
DD k CN0%
w
I*EHG$KZNT @ gDdk CN0H $Dv
gT PSIKAT lD]w
k CN0HBgT ' U IATT SB @ a @ V
v
o t BpI D]B9.R K"BgD KIBgD LnNv
JIEHGw
B
@ I DcB.~r $VnI-G vB
@ k CN0% IAK BgT KIBXLnN
v
JI*EHGw
h "!OG'B'gDPSI7TxDy_
f
C;
h(τ)
'gDPSIATdDτ
D]SB.9 r $VnI-G B @ k CN0% IAK '^T wR DDH # KI*BLnNMB
@ a @
V2
r(τ)
U DV '^T P wI BgDPSIATdDe_h(τ ) := max
b
$&%('*)+$&,.-*/10''32(4,τ
.R B^D KI*BgDjLONr(τ)
JIEHGb .
u0Q]{2D
KI*B
.R
4%>2.:,3' %('&.!
_ f
'8 0= + 243!K= 1'#&
LBL(τ )
D]SB59 @I D?B.9 ra]VnI7G /B
@ k CN.HmLONQB
@ a @
V VAT I7T WH^D]H ${*D D]H^G'BQP wI
DD
τ
kBN0H PSIKAT t I sDFNdeg(r(τ )) = 0
t DFN MLBL(τ) = 1
egf.hji`k]h4f.lB n+mo * %(( /36G
τ 0
"3.$%<$%/'HC;h(τ 0 ) = 0
3%36 ' '8 0=+ 243!K= 1'&
LBL(τ 0 ) = 0
#!$'K= B'$.M('J= 36#Gτ 1 =
"3.7' Ch(τ 1 ) = 1
6'#!9('#'8 = + 243!K= 1'&
LBL(τ 1 ) = 1
Negf.hji`k]h4f.l PnPo 7!' 8<(I.M(0.M'D,'"1' 36G
τ =
&%.
h(τ ) = 4
6'!LBL(τ ) = 3
N6 (%,"16G ('(:&($!'.('"/36G ;<(!#(' ' !*)*,?.+GHI.E'!L(:&(8''L(#'.(N
*BR6L((%'8<(.(0.M('R,'1' 36GH
τ
"3. ,-(8% / $' %'8 '"3R(Y.3% B'#!(H!;,?!' 6 (%,"16G
τ 1
6'#!
τ 2
6'! ! B 6L(%*('(H( /.M.('
t
='1'36#GH
τ 0
,-(.ML>.('Y.M8('#! 3%$B'#!(7!6 %,"16Gτ 1 0 , τ 2 0 , . . . , τ t 0
N1*2 . ! ( '$. <('!&B'P %L(I. L6 8('#'L(''P #>K(% B'!#( '7B'$.M(' 3. $J!(
36#2,<(%# 6#'! J%'6 (%,"16GH ('#(B'$.(' ('# ,?.MGHG.M )+63& ,?L((Y. b
,-($'!(( <(''R!6R!?+ 6'8Y.M7
· · ·
F!:3'&(!6#.M>. . O!"35 (' & 5( T;('& $'h M9N CBXU MDqUg{7I % I7{ %
6 (%,"16G (' ,-.$ /?(' 0. N T I. ('#(' <$&(' !6 ! &(L(1%.(' 3'Y.M(' 6'! !9!3'>=
,-('&,?' )*'L(3% $%% !6#.M%Y./!'P <(%# 3' .(' $9&(L 1%.;/!'R6'#!
>J(%B('!PN
+G #38Y.AL(6 '$.M(('P <<(%# + $.$' ('@B'#! 'B'$.(' ' !( '8 0= -EY.M0=
1:!' 6'#&B('#'G G . ! &%&('Y.M%!<('Y.M8('!#: 3'Y.M/6'Y.M(,$J'H6'#! ! 4P3%
' !B$ ('Y.M0.3'#!('! 8&((,-('PN
egf.hji`k]h4f.l!PnPo '. 36#G GHI. ''6 (%,"16GH'PN +(,6 %,36G
τ 1
. &('"36( 36#2F&2)0. N
τ =
n
τ 1 τ 2
NN(N
τ n
=
2 n
j 1
τ 1,1 τ 1,2
N(NN
τ 1,j
τ 2
2
N(NN
τ n
B 80 ''' ,-($,"3 .('P !"35 2) ! (8<(I.M.M'
t
= '"1' /16G ;'#Y.3%% '"3. #%('4P3%(';3%7)*'L(3%'9$'/%1..M'9G. &%9'!PN &B('"36(
5 ]n) Pn+m
=?>A@
B9 T !T EHG' r $VnI7G ;B
@ P wR%
@
'gD lEHG 9?
@ po @
W$ M%
@
%
t
JR @ dPSI7TxDτ
MD]%De_
kτ k ≡ 1 mod (t − 1).
egf:gf.h+io
:3L(&.('# '#243 '!68Y.M$',-(! C !: 36GH
τ
N
CB A{ #NT$DeLT
@
I2${0
@
_
h(τ ) = 1
N9*3,?!(6#..(τ =
6'!kτk = 1 + 0(t − 1)
Nh(τ ) = 2
N';!(GGU3%%?G 65τ =
t
. . .
'P "6#'!kτ k = t = 1 + 1(t − 1)
NCB A{ #NT$D DFEHG @ _
/16G
τ (≤n)
G .O('( C $'GH3KGH3%n h τ (≤n)
≤ n
&(%I.Mkτ (≤n) k = 1+i(t−1) i ∈ N
NK
τ
' 6' (';8<(I.M(0.Mt
='"1($ 36G G .Cn + 1
τ =
t
τ 1 τ 2
. . .
τ t .
h M9N CBXU MDqUg{7I % I7{ %
* 6 (%,"16GH
τ 1 , τ 2 , . . . , τ t
"3,-(' GH3KGH3%#'+C; #E$'
n
N A*3!#('!68Y.$'0$36 =>.ML6'& &%.<2)!6 (%,"16G
kτ j k = 1 + i j (t − 1),
2)#i j ∈ N
6'!j ∈ {1, . . . , t}.
7!#B)*'#L 3% ! /% 1..M/$'
τ
&%I.kτ k = X
1≤j≤t
kτ i j k
= X
1≤j≤t
1 + i j (t − 1)
= t + (t − 1) X
1≤j≤t
i j
= 1 + (t − 1) 1 + X
1≤j≤t
i j
!
= 1 + i 0 (t − 1)
G .i 0 := 1 + X
1≤j≤t
i j
N* )*'L(3% !C/% 1..M*$'
τ
%15.:R3%$9' !U$Gkτk = 1 + i 0 (t − 1)
GHI.i 0 ∈ N
36!#8('O ?6'#! $GHI.7&%. 2)
τ
kτ k ≡ 1 mod (t − 1).
5 ]n) Pn
=?>A@ @ WH @ H
t
JR @ qP?RAT QlsT Mt ≥ 2
o ' K^D]%"PgVDgG V7WsD|EHG B @ ra]VnI7G B@
PS zRH
@
m
CBB @ r $VnI-G B @ ' @ k CN0HN
_m = 1 + (t − 1)N
UgV?9^G' DyWD*N = m − 1
t − 1 .
egf:gf.h+io
F(!#( B'$.M' '7( /.M.('
t
= '"1('3 36G (;F$%<$% !*'''B'$.(';3%36;!/%1..(!E,?.L. &'"36 ('(' K 3.( PL(6 !(G ('#7 3'Y.M K0.M(.%bO' 6 !'B 6L(% ,?I.ML.
8'' K 3.M(N +)+'L 3#% !( 3'Y.(' ' 'G 8<(I.M(0.M'
t
= '"1(' 36G 0. !GH'"3&%(
(N + m) − 1
N:3!( ''#(DB'$.(' ' 8<(.(0.M('
t
= '"1(''/36G &'"36t
'<"3. . ! )*'L(3%!; 3'Y.(' 3'!(.ME&%(
tN
NtN = N + m − 1
⇐⇒ m = 1 + (t − 1)N.
h M9N CBXU MDqUg{7I % I7{ %
7X9
Lf h5h Pn f Z h+i e #.% <
>2.M0.= 36G
sDD$ PSIKAT T MB
@
$D|EHGJI-KH
t
B2I7"K
>A@C
yB '
@
Qk CN.H
v
_f @ { >A@ VgDDHa XLnN
v
V 'gTP wIYB^D ' U IATdD T B @ a @ V2v
K > G @ > U @ BpI-DI7T WH^D]H ${*DSDDHgG CBk CBQB.gD*^DkBN0H $D
v
= N @
TI Z_ [
τ
KyN @ B.'% @ t eW @ V M% @ PSIKAT [v
U -U @ @ k CN0HLONT
τ
CB GQdeg(v) > 0
p[Pp v
B @ KI*BLnN
v
VdBgT I7T W$ MH^D]% ${*D DDH^G'CBP zIKsT ' UAIAT T McB
@ a @
V
v
B2I7D=D]B @ KI*B t B @ D]%gG t CB^T LONv
IADEgG' CBsTdT @ B @ I7T WH^D]H ${*D D]H^G'Bc[JNOG I D
I*EHG$KZN @ eWR7G M W@ B 2[
p 0 v
KIBLONT
v
V '^T U -U PS zIjBgD# U IATdD"T MjB @ a @ V2v
i MK >A@ I ' @k CN0%
v
CBK >A@ I 9SDFN EHG KI*Bp 0 v
|p v | ≤ |p 0 v |,
D|NG' sP
τ
2..0= 36Gegf2% f*8`#&10 o T I.:!((+"'I.M$'D&%(J,-(!#(6#.('! &%.2)+3%%C '#$.M'
v
('(: >2.M.=36#GH* 1'& ! 8 #L(.('B &(B$'
v
L(6 'G /%3..*!(6 (%,"36GHτ v
O!('
BR6L(%
v
. #.&%(LBL(τ v )
N- N9B(G. ! "'(.' >2.M.= 16G ,-(7!(! &('"32.(N
egf2% f*8`#&10 o #E!# '8 = + 243!K= 1'&(' ';'G 2 .0.= /36G
τ =
deg(r(τ))
τ 1 τ 2
N(NN
τ deg(r(τ))
G .
deg(r(τ )) ≥ 2
&%.∀i : 2 ≤ i ≤ deg(r(τ))
LBL(τ i ) ≥ LBL(τ 1 )
.
VKNIQ !' #
i
= (6#. ?Nng#Q *2 N/"3.- N B(G. 2F$%&('!#2 &'32. 2)7 2.0.= /16G H,- (' 4#(78?L((%%?2)i = 2
!; Pnjm Uh&4 f2#15h0f*8(5`+-,& hzed4-+7, f Z h+i
e"! #.% f
i
, h4f*8 o2
<e<[
τ
(PSI7T T B @ 5^KH#D] $D|EHGJI-KH. @ D*TV&TI (I2 9YP wR% @ LONTτ
B @ EHG 5^KH#D]PSR7T T M!'
@
Q]{2D
KI*B
.R cLnN
2
t DFN D]vB @ BpI @ IAD 'D]%gG' CBcPSI7T W9 B @gKH9sD]
PSIKAT f I @y> U @ GJIADD]S'D|NT EHG'~k NT$D] @ A{ #N B9
h M9N CBXU MDqUg{7I % I7{ %
egf.hji`k]h4f.lPn o E$'0.M6#8 .$' ('#( >2.M0.= 36G !69''
2
(.) >*/ /3LB&(L(J='>.M' >2.M0.= 36G
τ
!D( /.(.( ?'!G 3%%B(''<% 1..M(` µ
92)
1 ≤ µ ≤ 6
!#64&M36 &(L(#'.5! 2.0.= /16G
τ (µ)
G . '2 '8 = + 243!K= 1'& $'LBL(τ (µ) ) = 2
(>.ML. <(!#('PN K !( 2..0= 36G
τ
$E!#( 8<(.(6'&` 1 ` 2
` 3
` 4
` 5
` 6
* !#6 !*-( V = 6#.= /.(6#'&+'Y.M.('!= >2.M.= 36G 8 ''Y.M !"3'' ,-(8% /
$H36('
` 1
LBL
=2
` 2
LBL =2
` 3
LBL=2 ` 4
LBL=2 ` 5
LBL
=2
` 6
LBL
=2
h M9N CBXU MDqUg{7I % I7{ %
Lf h5h Pn3 f Z h+i
e"! #.% f ' 5`%M9 l4f #.&4 egf*)af.h+7,./#..0f2 <
=?>A@
U^D]#TxT HPSIATdKI7T B
@ gKH#D]
PSR7T W$
@
B B.gD*
@ r @
U M KZN CB [\]T
U]N 9U V _
L (t,2t−1,...,1+t(t−1))
NpB @L (t,...)
UgVEHG'&B. SB@ gKH#D]
PSR7T t B
@ dkBN0H
LnNOT i @ I*B
0
tt
t2t − 1
t3t −2
t D? NpB @1 + t(t −1)
DB f I-D G s t K >7@$ yB k CN.Hv
'^D ^KH#sDD
PSIATdD
τ ∈ L (t,2t−1,...,1+t(t−1))
M _deg(v ) ∈ {0, t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)}.
h
L (t,2t−1,...,1+t(t−1)) m
N2B @
L (t,...) m
U^V2 EHG'T1B. K I 9 @ ^KH#sDD
PSRAT .T @ zI$UH
k CN0%
@
I*B
0, t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
CBm
P wR% @ X5 ]n) Pn
=?>A@ B9T !T EHG'Sr $VnI-G vB @ P wR% @ '^D lEHG'
D @ po ^KH#sDD
PSIATdD
τ
IADB @ KL (t,2t−1,...,1+t(t−1))
M&D]HTDy_kτ k ≡ 1 mod (t − 1).
egf:gf.h+io
)*6#D( 2)('7!'< <(E!6 '#!68Y.M$' '3 !#(EC; # !#(; 36G
τ
NCB A{ #NT$DeLT @ I2${0 @ _
h(τ ) = 1
N9 E0.τ =
6'#!kτ k = 1 + 0(t − 1)
Nh(τ ) = 2
N .τ =
λ
N(NN 6'!
λ
.('( !( (%36#,#.M' B'$.M'&3!H36 !#( T ('&{0, t, 2t − 1, . . . , 1 + t(t − 1)}
)<$,?O$ /?('#Y.%H'H!(G U3%%λ = 0
'Y. G. &% 0.8! N)*%%:!#(C '#$.M'&M3! ,?.L(' !B&2F$!.MC"$G
λ = 1 + k(t − 1)
GHI.1 ≤ k ≤ t
NCB A{ #NT$D DFEHG @ _
K
h(τ) > 2
"6'#!D(E&%.Mkτ 0 k ≡ 1 mod (t − 1)
2)E3%% 16#GHτ 0
G .h(τ 0 ) < h(τ)
U!3%$ ('B8 %('( C; # 3,?'D3%
τ
N*;/36G
τ
"3.E!:2F$%&('!"$Gτ =
λ
τ 1 τ 2
N(N(N
τ λ ,
6'! ! B 6#L(%,?.L. '' B'$.M('#&M3!
λ ∈ {t, 2t − 1, . . . , 1 + t(t − 1)}
N?)*%$ 8 ''#('
λ
!"30.M%%';3%λ = 1 + µ(t − 1)
G .µ ∈ {1, . . . , t}
N9 #3%%i ∈ {1, . . . , λ}
&%.• τ i ∈ L (t,2t−1,...,1+t(t−1))
• h(τ i ) < h(τ)
h M9N CBXU MDqUg{7I % I7{ %
6'! '"3 !9'!68Y.M$'0$36.L(6'& &%I. 2) 3%% !
i
kτ i k = 1 + k i (t − 1)
G .1 ≤ k i ≤ t
N7!#B)*'#L 3% ! /% 1..M/$'
τ
&%I.7!"3G .kτ k = X
1≤i≤λ
(1 + k i (t − 1))
= λ + X
1≤i≤λ
k i (t − 1)
= λ + (t − 1) X
1≤i≤λ
k i
= 1 + µ(t − 1) + (t − 1) X
1≤i≤λ
k i
= 1 + µ + X
1≤i≤λ
k i
!
(t − 1)
= 1 + k 0 (t − 1)
G .k 0 := µ + X
1≤i≤λ
k i .
2.0.= /16G :GHI.
n
/% 1..M'P !# L(6 !(';( /.M.('D,#'"1('3 16G (';&> 'P U"3.- N B(G. Qf :,- 'P !"35 )*'L(3%B3FJGK.M$. &(&,?' . !6
t(n) ∼ αc n n −3/2
GHI.α = 0,25 . . .
6'!c = 2,74 . . .
*'U3& '3 !(C4P3#% ! >2.M.= 16GG .
N
''#('B'$.M' 6'!9'"3 'G 3"JG#.$.M' )*6!68H2) !(C4P3% /3 $' B' 6#.M;' ,#6'&36#2F&Y3,-XKNVKN)g%EgS Q S 9?N Q X!/&.M%%I. /$!'PN*( &(,'./VWW#Q7$' *G $.3 S-36#2 >2.M.= 16G 7( /.(.,<$!'P J!L(6H('(
,-(%(,&('U3G %E('#243 (L((6#&.M: 16GHB&(> ('PN
- N B(G.96'Y.M6Y.+' 1P6#'! &fO' T;('&+$' 3!#!.'(+ 3M3G .(' 36#2 !(' >2.M0.=
16#GH'96'Y.M(!' (8<(I.M.M' ,'"1('/16G ('PNK)7!!.+ 33GH>.M '! 36G."33G >=
.M( ! 3!!I.MD("3%I.M('O !3#(5.!# R8J6#I !6 )7!!I.M$' $' )+' .(%('
!?BR6L((%"6#'!H!#(?6 %,"16G (GHI..(%' %3('ON :3L(6 &> 'H6#' .(<3'!'8,)>(D8,=6'#!
1 )>(D8,=IH:[-$W,.-.>
#
,.E5@0.$6.(DpQ$W)+)A(D*6'! ! c '*,5/ 46'! 36#.)*/ ! \^`@a6 c ,.-./!
2..0= 36GHN
<6 /"3 . ' IQ+f P!(+'Y.M6 6'&H36#2 ! 2..0= 16GHE' !(<U3G %7!/8<(I=
.M.('
t
='"1('3 16G :M3%%&GH'.(N3('#! 36#2 !#(' 3!#!.'"&B .('AL(&.AE$&6(3 ' Q ?!35 !!#6'I..M%
C; H$' 2..0= 16GH' 3"JG#.$.M
n 1/2
,-.M1&.( 6'#! (83'' ! L6&( & E$'K=.M3'Y.M G .7$(;&B('"36#&8(.E3'&(,-('ON
'!M1('Y.M(0.:- N9B(G. GHI..(%= L(6&'!('K2F6'8Y.M$'(' ('T3 &%8(.( #!B #38Y.M'
)*'#L 3%('!( 2.M.0= 16#GH G .
n
'#'((''B'$.M('6'!m
/% 1 ..M'P !#L(6('#( ,?%(,&(' ('#243L(6&.(' 36G 243GH% &( 'P KL6,-(''PN9 !'-3%% !"35 ' 6<!+)*'L(3%!/%1..M6'Y.M6# . <(!#(' $%% <&,#.9 36 (' )*"JG#.$.M8 2) ! )+'L 3#%:!(
2..0= 16GH*' !E'#243;L(6&.(' 36G 243G %E3'PN
- N$ G ,-(#(,#. ' IQ W 36#2 8$'0.M6#8 . BR( ('# Q -Q= E$(8?$'#!('L L '
( /.(.(' ,'"1(' 16GH' 6'!3 >2.M.=
2, 3
= /16G ('PN*( Q UQ= E$(-$'!#('L! ' !9$%&('#!(' )*,?.9(M3%%&(G ('#(./!' 36K2
(';Q -Q= +$(8?$'!('#LHL #(' 8<(.(0.M('
t
='"1(' 16G (' 6'! >2.M0.= 16G (' G .!' %36,#.M'B'$.M('#&M3!#('
t, 2t − 1, 3t − 2, . . . , t(t − 1)
N/1)2+V+2)/18#/6>*)a^& "!$#&%(')*,+"-/./0123#4-657!$#45 89: /6798b/1);!+$2)2/d8/1>?)=< 1e(*CT^R]+/d8+ e [
(3)?>*+>?+EF+E).
u0 P ^{AI2 HgD U gKH9sD]
PSRKAT
G F3 VWWgD8$''Y.M- N B(G. ' IQQ/''#$K <(I.M(&(#('!LKM3%%&GH'6'&;L(I=
&'P "$'A!#(E(' -(L3%I243%%P' 3'#!(' 6#'& !*' !((;*%$GH3,-(I.<M1('Y.(0.M'
&,'+!30.M(%%.(N
4O(I.M%.!"37L('Y.M3%C &(,'7!(7$%(&('!' *%$GH3,-(I.<$!($BGK= )*,?.
('Y..3'!('ON= (!( "3,?' ,-(G )+6#2F(,?' 6'! )*602F$G 6%(' !( &,'
36$-( '%'"&B'#!(';('&ZKL &(6'&'D&,?'P U$ !"35 !C*#%$GH3,-(I. .
.L.$&%(&.</!'D8 3''PN
1:,#/$#%7!G (.(' ('#"32 .%(' K(8 /O'Y.M% 6'&' !#98$G ,'3.M$(' &('K=
32 .M'D$' 2.M.0= 16#GH' 6'Y.(6'P P&,#.(*36D,-((%"32 .MBG.%(G ('Y.M(6#'&('
6'!;(G.E' .(6 6'&('A!(( :3.('0.M6#8 .6%bU(#BL(6GG<(8%P!:)*,?.7$'
/$ 6'!#3' Q f V "!B((!'K 33'Y.('9$' 2.M.0= 16#GH';6#'!;$'"J8J5%=
.('H36#2-#< &'J6#'& 3% L6&6'!%&('#!$:3.('0.M6#8 .6'H2)?+ $.1 .M8/30.M(%3'&('
6'Y.M6Y. N
* )*'#L 3% !D( /.(.(' ,'"1(' 16GH G .
m
/% 1 ..M' 6'! !R! 2.0.=2, 3
=16#GHHGHI.
m
/%1..(' '#! &%P - N G ' Q W/'"3#<(0. N ' /L((&. G . C+%2F:' U6#'8Y.M$'"3%,-(LJ6#'& 2)! ' 6G (3.M$ = L(6&('!'#2F6'8Y.$'' $' >2.M0.=16#GH'P !9L(6 ('(U3G % ('K243 (L(6&.M(. 16GH9&(> ('P ('#9&Y3'L3-($'
!' ..M1.M'Pb !"36#' .( 241%%I. 36!;& %(#(I.<!#( )*'L(3%' !/8<(.(0.M('
t
='"1(' 16K=G G .
m
/%1..('D('(.M*6'! !( >2.M.=t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
= 16#GHGHI.m
<% 1..M(';3'!(.MN*7GHI..M% !<"6'8Y.M$'"3%&% 6'&L(62)('!#/ <(7!($&B%GH1Y.M&8.<!(70=
<(.(0.M('
t
= '"1' 16G :G .m
<%1..M('6'! !$ 2.M.0=t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
=16#GHBG .
m
/%1 ..M'(! G 2F$%&'!(';36#2)% 3'&(&(,-('PN*( L('Y.M3%C"6'8Y.M$'"3%&% 6'&# K!B2)7! >2.M0.= 16G :'#'("3%, '7('K243 0=
L(6&.('3 36G 243G %7&%I. J0.73% -38 . SNS7(!&&(,-('PN <$ (!$J G .<#3.LBSN)g
!/ <(B&2)#.<(!(' 8 3''P OG'(' L(6#'"10.'#$K '""33U38Y.M' 6'! 4 ('K=
(&(,#' L(63GHG ('#&.M3&'(/!'PN
Lf h5h n+m Zh +-, f*8O)af2#.0 5f7e #&% % h+ljh4f2. +-, n fp% k 4mK<
[
F
' !yN @ B.'TH @ PSR7T tn ∈ N
CBT (n)
B. KYB @ PSRKAT &T Mn
k CN0%' @ GJI UxB.gD3 @ "LON PSRAT
T (n) := {T ∈ F | T = (V,E) ∧ |V | = n}.
P ^V2EHG'
t(n) := |T (n)|
B9ra]VnI7G vB9gD3@
PSR7T T M
n
k CN.HX f I G'P B. @ V2TCB]KH${ #N
E(z) := X
n≥1
t(n) z n
' 6GHM3.$0= L(6&'!('K2F6'8Y.M$' $'
F
f dPSIATdKI7T 9
F
G' sP '#243 L(6&. t KI D ^D @ zR @ MlwI JI \Q9sDFEHG' o = ]{'9NΘ(y) = 1 + P
i≥1
c i y i
Tc i ∈ {0,1}
CBc i = 1
K >A@i ≥ 2
UT ME(z) = zΘ(E(z))
egf2% f*8`#&10 o*D' ! )*,?. ,?>.MM3 ..(' 2.M.0=
t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
=
16#GHB80 '''A3%I.M('"3.HL(63*"'#.M$' VKNS !B 3%$+'Y.(G ('#& !( 46#'('&(M1'8=
.M'!: 2.0.= /16G ,-(,#.( P'#!(G ! (%36#,#.M'"B'$.M'&3! '&(#M1'8Y.<(!('P
36H3% ('$+'Y.MG ('&7!(&$!'#.M' /16G GHI. %36,#.M'. '#$.M'&M3!('
0 t 2t − 1
R*EHG #{0 MH DCB EHG
N(NN(
1+ t(t− 1)
,-.M3Y.M>.*/!'P '!(G 36 !( T ('& ' 6 ! 16#GH G . !* 2..0=&'32.E(36&(6# .;/!'PN
*(' %.L.M' )+'M3.LB(02F$%&.$- N BGP /''D! >2.M0.= 16G :6'Y.M6Y. -!BL6
('(7,-(0.MGHG .(' U3G %('K243 (L(6&.M(; 16#GHB&> ('PN *B('#243 (L((6#&.M! 36G =
243G %
F (Θ 1 )
GHI.7!(! "'('!'"6'8Y.M$'Θ 1 (y) = 1 + X
1≤i≤t
y 1+i(t−1)
0. &(M3!H!#-3GH% !( &($!'>.M' 16G HG . %36,#.(' B'$.M('#&M3!#('
0 t 2t − 1
N(NN(
1 + t(t − 1)
N *:T '&:!#( ' !#((=-3GH% $8$G G ('!'( 2..0= 16GHFL(Θ 1 )
0.!B#(7,-.M3Y..M T '&
L (t,2t−1,...,1+t(t−1))
NLf h5h n
f
M[JEHG
@
U W$ sD*
[z n ]A(z)
T B k N0 VD H LON @z n
B @ KZN @ T(I2 9 N0H $V @G'
A(z)
D]A(z) = P
n≥0
a n z n
t D|NI[z n ]A(z) = a n
' X P"3,-(' !:)*6K.M$('3& 3"3G; B'J6K.M 6'! + 3 .3'8 J(%:GH3.MG 3 .MBT;.M#$K!'
6'! K$&(' /(' ,?(,-('O P!L(6*)*'"3%WJ $' )*%&$I.MG (';6'!*3.M'.68Y.M6J=
'9' #.ML% ('98 '#'('PN>+'Y.M73'!G "3,?'9*369'&+!#('Y.MI.1.('2)=L(6&('J=
!'#2F6'8Y.M$'' G . /'$G 3%8$J L(('Y.M' 6'! ' L(6&(> &' &(%$'(' "$G ('
L(6#M3G GH'&>.MM3&('PN>B ,-('> .&' ('# !3 $' FJ&% N XK 6 3,-(%%PgYVJQ *! N
; njm Uh f0f.ie+7, l_i%i%f2 f `J8-% +-, <
f
@
V2T B$KH ${ #NT
P
n≥0 c+n−1
n
z n
UgDMVYB.9^D|EHG NOD D3'= N @ T
1 (1−z) c
:3 2F$%&('!H'Y($'.($(G $' 3&M3'#&.! 6'# 6'Y.M 3'!#(G G. &%'P
!B)*'L(3% !E8<(I.M(0.M'
t
='1' 16GHBG .m
/%1..(';L6 ,-(('#('PN; n $0J8 $.0f.ie+-, f f*8 i%h i J8-% f.l & $+7, l yl+fd#.&465=f24.0f:Ih+ 4m <
@ K >
M ' @
V2T B$KH ${ #NT
A(z) = P
n≥0
a n z n
B.9 = ${ #NJI 9 EHGz = f (A(z))
tW NpU `K >A@
f
t B2I7f(0) = 0
CBf 0 (0) 6= 0
t BpI sDDa n = [z n ]A(z) = 1
n [u n−1 ] u
f(u) n
.
egf2% f*8`#&10 o #E!# 'Y "6'8Y.$'
f h−1i
!(E(3'&(&,?'('U6#'8Y.M$'f
G 6#5H&%I=.M'
f (f h−1i (z)) = f h−1i (f (z)) = z.
BR('!>.*GH3'
f h−1i
36#2 ,-(!#CK(I.M(';!:&B% 6'&z = f(A(z))
3'P $ 2F$%&.f h−1i (z) = f h−1i (f (A(z)))
= A(z).
R*EHG #{0 MH DCB EHG
*U6#'8Y.M$'
A(z)
.E3%$ !+G 8(#2F6'8Y.$' $'f
N' !" .(M3 .M6;0.A!"3 3&M3'&( 'Y$'0.M$G $2.D36 #%L. GHI.;!(
+G 82F6#'8Y.M$'0= A+$.M3.M$' 3'&&(,-('<$!'Pb (L(6#G/((% /$G .M>. &g# %K(I.MQ SRf / N N
5 ]n) n+m
f ra$VeI7G B @ @ WM% @ H
t
R @ mPSRKAT T Mm
P wR% @ D]E m (t) = 1 m
t m−1 t−1
m−1 t−1
.
egf:gf.h+io
*B(8<(I.M.M'
t
= '"1'/16G :2F$%&'9!("KG ,?$%('& %(J6#'&T = +
t
T T
NN(N
T ,
6'! 2) ! L(6&('!'#2F6'8Y.$'
T (u) = P
m≥0
a m u m
!H)+'L 3%a m
!#((. 16#GH G .m
<% 1..M(' &%I.T (u) = u + T (u) t .
4SNIQ !:3G . &%. 36#
u = T (u)−T (u) t = f (T (u))
G .f(z) = z −z t
N 0.f 0 (z) = 1−tz t−1
6'#!f (0) = 0
$f 0 (0) = 1 6= 0
N *6# )*'#<('!6#'&R!#(7 3&3'&' ' ($'2F$GH%U38Y.HSNV ! "3%.M' 2) ! )+'L 3#%+! 8<(.(0.M('
t
='"1('/16G G .N
''#('B'$.(';6'!
m = 1 + (t − 1)N
/% 1 ..M'E m (t) = [u m ]T (u)
= 1
m [u m−1 ] u
u − u t m
<(&'U38Y.SNV
= 1
m [u m−1 ]
1 1 − u t−1
m
= 1
m [u m−1 ] 1 (1 − u t−1 ) m
= 1
m [u m−1 ] X
i≥0
m + i − 1 i
u (t−1)i
<(&'U38Y.SNIQ= 1
m [u (t−1)N ] X
i≥0
m + i − 1 i
u (t−1)i
!''m = 1 + (t − 1)N
= 1 m
m + N − 1 N
E$KHL' .+3';! J.M%%
i = N
NR*EHG #{0 MH DCB EHG
*6D'B%.ML>.MC .ML6'&
N = m+1 t+1
(&,#.7E m (t) = [u m ]T (u) = 1
m
t m+1 t−1
m+1 t−1
.
4SNV !5 ]n) n
[
T h−1i (u)
B9 @ vI sDT h−1i (u) := u − u t
T h−1i (u)
D] B.9 L @ D3 = ${ #NXLONTT (u)
egf:gf.h+io
B <(!#(' ! 3&3'& ' ($'2F$GH%/36#2!"6'8Y.M$'
T h−1i (u) = u − u t
3'K=<('!'P -6'! 3%7!'EGH8(02F6'8Y.M$'
T h−1ih−1i
!;T (u)
#(M360.M(%%'PNT h−1i (u) = u − u t
= X
j≥0
a j u j
GHI.a 0 := 0 a 1 := 1 6= 0 a t := −1
6'!a j := 0
$'.(N+G !E$KHL' .(';!( EGH8(02F6'8Y.M$'
T h−1ih−1i
$'T h−1i
L(6 ,-((''P /'!('' 6';!C 3&3'& 'Y$'02F$G (% 3'
[u m ]T h−1ih−1i (u) = 1
m [u m−1 ]
u T h−1i (u)
m
= 1
m [u m−1 ] u
u − u t m
= 1
m [u m−1 ]
1 1 − u t−1
m
= 1
m [u m−1 ] 1
(1 − u t−1 ) m .
A+6#' 6,..6
v := u t−1
N :3G .7&%.u = v t−1 1
$u m−1 = v m−1 t−1
N K6#,..M6#(/.M0='
N := m−1 t−1
N%:3G .O&%I. 36m = 1+(t−1)N
6#'!P80 ''' G .P!#(('C/L((' 6'&'#(,?'
[u m ]T h−1ih−1i (u) = 1
m [v N ] 1 (1 − v) 1+(t−1)N
= 1
m [v N ] X
j≥0
1 + (t − 1)N + j − 1 j
v j
/&('-38 .S#NQ= 1 m
1 + (t − 1)N + N − 1 N
+$J / N",?
j = N
R*EHG #{0 MH DCB EHG
= 1 m
tN N
= 1 m
t m−1 t−1
m−1 t−1
= [u m ]T (u)
/&('& % N FSNV!>N*U6#'8Y.M$'('
T h−1ih−1i (u)
6'!T (u)
0.MG G (' ' 3%%'A#(' E$KHL' .(' ,-('P O'! 3%$ !' .PN
B <(!(' '"3'."$GH% 2) ! '!% &$GH>.M# J6GHG ,-('> .&'PN TD3'
8 3'' ' K(%(' &6'!#%(&('!' TD3.(GH3.8 %,>#(' $J!( A*3%3& <(8(' "'#!('P
$ L(6#G /((%'VKQU$J! ' VS N './ / 8 3'' !(8Y. T 6%I.M5%83 .M$' !=&B% 6'&
G .
(q−1)
6'!)*6G 6%I.M#%L('!-$J!( 36!6$%%0.1'#!& '!68Y.M$' &2)#. /!'PN ; n Lf*% fn80h+ie+7, fX5`#.% % f & +-, <=?>A@ I2 9
q ∈ R
tq 6= 1
CB I 9n ∈ N 0
M _X n
i=0
q i = q n+1 − 1 q − 1 .
' # & %( 6'#&DQ+g %..;- N B(G.A(' 3%%&(G ('#U6#'8Y.M$'"3%&%( 6'& (+2): >2.M0.=
16#GH #!*L(69'<B%3:'#2439(L(6&.M($/16G *&> 'PN9*(/(LJ6#'& .M%%I. !'
L('Y.MM3%('.+ 6'8Y. !D< <((!"3 !"35B!#7,-(!#(' 36#GH8 %3'
E m (t)
6'!
L (t,2t−1,...,1+t(t−1)) m
&%(#G 1Y.& '!PN
; n 1#&; h Sl0l4fh+-,/#&10 18 f Z5hji
e"! #.% f +-, f2% k <
[
`(m)
B.9Yra]VnI7G /I @ gKH9sD]
PSRKAT
τ ∈ FL (Θ)
T Mm
P zRKH @ t B.SV ' @Y= I-T 9$KI*EHG @ V2T %
@
PSRKAT
F (Θ)
^G ! @ SD3L(u) := P
m≥1 `(m) u m
B.mBpI-V ^G ! @@ V CB $KH${ #NQ
L(u)
@ K > M B. = ${ #NJI 9 EHGL(u) = u + L
u Θ (L(u)) − 1 L(u)
.
%
@
B
@
N @
I7D D*TV
c 1 := [y]Θ(y) = 0
UnWsDD =Ck gT t BpI-mB.9^D*=
${ 9NJI2
EHG B9 .!ODD U^DV
t
B.9
L(0) = 0
@ K > M*3"$!(6'& !35R!#(+$J L(('Y. $
y
'Θ(y)
&%( W ' $%% 8&(%I. !"3,-(!6 3.M3:!( K!"35 !E)*'#L 3%?!(= 16G *G .
m
/%1..('&('36!"3'#'('!#% .( #/'' B'$.(' $G &BM3! Q '#Y. %36,#. '!ON *3D,?!H'R!()*,?.,?>.MM3 ..(' 36G =8 %3' !(; 'M1'8 6'& 2)%%'P Y$%%G 2F$%&'!'H!(+)+''"3G &(%I.M'P 36./''
B'Y.E %L.78/1'Y.;!PN
R*EHG #{0 MH DCB EHG
T I. !#((' C+%I2FG ..M(%':8 ''('! .L. !(' / <( 2)#('O !35+!#<T ('#&<!#( (8<(I.M.M'
t
='1'/16G GHI.m
/%1..(' 6#'! !T;('&!? 2.M.0=t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
=16#GHBG .
m
/%1 ..M' &%(#G 1Y.& '!PN5 ]n) n
f
ra]VnI7G B
@ @
WM%
@
H
t
JR @ XPSRKAT Tm
PS zRH @ ' @ D* MD CBXB @ ^KH#sDDPSR7T cT M B @ zI$UH k CN0% @ I*B
t, 2t − 1, . . . , 1 + t(t − 1)
T Mm
P wR% @ mI2CB@ @ D3MD DB EHGQ
egf:gf.h+io
*7 2.M.0= 16#GH 36
L (t,2t−1,...,1+t(t−1)) m
'#! ('#'6 %GH'& !#(U3G % !(:'#243 0=
L(6&.('/16G
F (Θ)
GHI.Θ(y) = 1 + P
1≤i≤t
y 1+i(t−1)
N! L(6&('#!('#2F6#'8Y.M$'
L(u) = P
m≥1
|L (t,2t−1,...,1+t(t−1))
m |u m
2)# !#)*'L(3%U!D >2.M0.=t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
= 16#GH9G .
m
/%1 ..M' 'L (t,...) m
&%. !"6'#8 .$'3%&%(=
6'& U38Y.SNS !
L(u) = u + L
u Θ(L(u)) − 1 L(u)
.
!B,?>.M3Y.M.('" >2.M0.=
t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
= 16G 0.! ,-(#(,?'!"6'8Y.M$'
Θ
&(&,?' !6#Θ(y) = 1 + P
1≤i≤t
y 1+i(t−1)
N *3(.<<(.(L(u) = u + L
u P
1≤i≤t
L(u) 1+i(t−1) L(u)
= u + L u X
1≤i≤t
L(u) i(t−1)
! ,
6'!;(&,#.&'"36;('# 6'&
L(u)
G .L(0) = 0
$36&(>.ML>. U!"35c 1 := [y]Θ(y) = 0
NA+6#' .
T (0) = 0
6'!u + T u X
1≤i≤t
T (u) i(t−1)
!
= u + T (T (u) − T (u) t ) X
1≤i≤t
T (u) (t−1) i
!
/&('& % N FSNQ5!
= u + T (T (u) − T (u) t ) X
0≤i≤t
T (u) (t−1) i
− 1
!!
R*EHG #{0 MH DCB EHG
= u + T (T (u) − T (u) t ) (T (u) t−1 ) t+1 − 1 T (u) t−1 − 1 − 1
!!
/&('U38Y.SN)g
= u + T (T (u) − T (u) t ) (T (u) t−1 ) t+1 − 1 − (T (u) t−1 − 1) T (u) t−1 − 1
!
= u + T T (u)(1 − T (u) t−1 ) T (u) t−1 − (T (u) t−1 ) t+1 1 − T (u) t−1
!
= u + T
T (u)
T (u) t−1 − T (u) t 2 −1
= u + T
T (u) t − T (u) t 2
= u + T T (u) t − (T (u) t ) t
= u + T T h−1i T (u) t
/&('#3.L S#NV= u + T (u) t
= T (u)
<(&'"&B% N FSNIQ !>N*$U6#'8Y.M$'
T (u)
(02)%%I. 3%$B!$"6'8Y.M$'"3%&% 6'& ! 2) !< 'J6#GHM3.$0= L(6&('J=!'#2F6'8Y.M$'9!< 2.M.0=
t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
= 16#GH+&%I. bY!"3/,?!(6#..(T ≡ L
NBR(%E3%$ !3 ' 6GHM3.$0= L(6&'!('K2F6'8Y.M$'
T
! ( /.(.('t
= '"1(' /16G 6'#!! ' 6G (M3 .M$ = L(6&'!'#2F6'8Y.M$'
L
!( 2.M.0=t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
= 16K=G !#('Y.M '!P +'! 2F$%&% 36 !R)*'L(3%!(A8<(I.M(0.M'
t
='"1('/16G G .m
/%1..('6'! !# )*'L(3%#!#( >2.M0.=t, 2t − 1, 3t − 2, . . . , 1 + t(t − 1)
= 16G GHI.m
<%1.0=.M';&%PN
';!(G )*,'..</!'D' 6';!B)+,,%!6'#&('
LE
6'!EL
!#"'(0. N9:3,? ,%!.LE
('(' >2.M.= 36G
τ ∈ L (t,2t−1,...,1+t(t−1)) m
36#2 ('#(' ( /.(.('
t
= '"1(' 36#GLE(τ) ∈ E m (t)
3,P "6#'!
EL
! D3% !C+G 8(#M3,,#%!#6'& $'LE
#(M360.M(%%'−−−→ LE
L (t,2t−1,...,1+t(t−1))
m ←−−− E m (t)
EL
:3,-( $%% 2)*,?! )+,,%!6'#&(' &%.(' ?. ('" 36#G
τ
$ <$% 'L (t,2t−1,...,1+t(t−1)) m
3%
36;'
E m (t)
$ 0.
LE(τ) = τ
6'#!EL(τ ) = τ
N *3(5. 2F$!#('LE
L (t,...) m ∩E m (t)
= EL
L (t,...) m ∩E m (t)
= id .
)*6#&('!;$';!7)*,,%!6#'&$I2. !#- N>B(G. ' Q WP2)
t = 2
,-((,-(';"3.!A!K(3%%&(G ('(6'& L(6'"1. ,-((%32.+2)#
t = 3
6'!t = 4
!6#&>2)0. 6'!!"3'3;2)#+3%%&(G ('#(
t
2F$G 6%(.(N M ,*p < 77
t = 2
+G '!/8Y.M$' L #(' ( /.(.('A,#'"1(' 16G (' GHI.
m
/%1..M'Pτ ∈ E m (2)
U6'#!
2..0=
2, 3
= 16#GH' G .m
/%1..('Oτ 0 ∈ L (2,3) m
L(6 (.(%%('P "3.- N G ' Q W !
2F$%&('!#(' )*,,#%!#6'&';!#"'(0. N
4)Z! *6 3'02F$GH3.M$'
: L (2,3) m → E m (2)
0.8J6#I9! "'.
4)Q !
( ) :=
b4):V !
τ 1 τ 2
:=
(τ 1 )
(τ 2 )
b4) ga!
τ 1 τ 2 τ 3
:=
(τ 3 )
(τ 2 )
(τ 1 )
N. rbU$U B
! *6 3'02F$GH3.M$'
: E m (2) → L (2,3) m
#+!'* "'I.M$'D!-$8 Y.6'&9,-('> .&'3+'' K#'.. !6 ('('A0=
<(I.M(0.M' ,'"1'2 36G !E$&('"3'#' .
L
= *(8$G-$.M$'PN - N B(G.H! "'(.<!(L
= +(8$G-$I.M$'2B2F$%&.Lf hz h Pn+mm
L
Lf % k i hz h 18 f*8n:gf.hz5f*8O fb9]h.!]80f:e"! #.% f $+7,4m <
BgT k CN0%
x
'^D @ WH @ H U2JR @ PSI7TxDτ ∈ E (2)
tkτk > 1
t W@ B 'I @ {.9 @
ξ(x)
V2yN @ B.'T P jB2I$U .I B @ a @ Vr
B^DPSIATdDτ
= I sDUB~[ !OG'bLnN
r
@ ck CN.HDCB t D3Vξ(r) := 0
JD|N]D]ξ(r) := 1
h
= I sDYB
@
I%
@
gD?k CN.H]D
x 6= r
B.9 I @ {.9 @0
UgDV CBU BS[ !OGLnN
x
@ ck CN.HDCB t D3Vξ(x) := 0
JD|N]D]ξ(x) := 1
P ^V2 EHG' ' mB @ WH @ H U JR @ (PSIAT T MvB @ a @ V2
r
t B @ IKADτ
DDH^G' tCBgT I 9kBN0H K
@ W$
@
B t B
@
I%
@ T M
1
TI @ {. @ :sDD t I sDτ (0)
/[ 9` 1 , ` 2 , . . . , ` kτ (0) k
B. P wR% @ LON
τ (0)
Q${*D yEHG D @ B. W@ UgVEHG' B@ WM% @ H U R @ P?IAT T M B @ a @ V
` i
I sD
τ (i)
t K >A@1 ≤ i ≤ kτ (0) k
f
L
= *(8$G.?$.$'B^DPSIATdD
τ
U^D]H^G SBpI2 IADB @= Nσ τ := τ (0) , τ (1) , τ (2) , . . . , τ (kτ (0) k) .
F>.ML.E8 3'';!B)*,,%!6#'& J(8 6I9!'.$/!'
+Q !
( ) := ;
V ! *( 36#G
τ ∈ E m (2)
"3,-B!
L
= +(8$G-$I.M$'σ τ = τ (0) , τ (1) , . . . , τ (kτ (0) k) ,
6'!
` 1 , ` 2 , . . . , ` kτ (0) k
(' !</%1..( $'
τ (0)
'' '8 0= -E .0= 1B!' 6'&N:3'';0.
(τ) :=
(τ (0) )
τ i 1
` i 1
τ i 2 ` i 2
N(N(N
τ i kτ (0) k
` i
kτ (0) k
.
:3,-( 0.72)
1 ≤ p ≤ kτ (0) k
τ i p :=
` i p
(τ 00 )
243%%
τ (i p ) =
` i p
τ 00
;
` i p
(τ 00 )
(τ 0 )
243%%
τ (i p ) =
` i p
τ 0 τ 00
.
XKNIQ !