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0 • * . & ." 8 & ! . = 9 " )& 3 $ % . = . 4 1 = .+α., ./ ,--" / 3 ., /. α . 1 " & 3 . 4 .= 1+ . ,--"0/ 4 .= 1+α.+ . ,--":/ 1 & 1 . . 1 " . 1 . 1 , /=, /" ; & . α ." + α_. , / 4 . . . ., /. . ., /. α = − − α α= ,--"</ = .= − . .+ 1 ,--">/ . . 1 .=,.? 1/ . ,--"@/ 1 .= . .= ., 1− . ./= − . . + . 1 ,--"A/ .= . 1 .= . 1 1 . . α

: 3 .>2 " )& 3 . " B α_{. .} & <2 . 1 & " ; 1" • 1 =α.+ 1 1 = 1−α.= + 1−α. ,--".2/ + & 1 & 1 α = − ,--"../ 3 1 α 1 1 = + 1−α.= +α α1− +. 1 ,--".1/ * . ., /. α α= . . . . . 1 . . . , / α α α α =∂ =∂ =∂ + ,--". / 1 1 1 . 1 1 . 1 1 . 1 = + = + ,--".0/ -. . 1 . 1 1 1 . . α _β α ∂ ∂ = − = − ∂ ∂ . . 1 1 . 1 1 1 . . α _β α ∂ ∂ = − = − ∂ ∂ 1 1 = − . . + 1 + 1, .+α1+β1/ ,--".:/ 1 1 1 . 1 1 1 1 1 . . 1 1 . 1 3 2 α = − − −β > = − − + ,--".</ . 1 1 . 1 1 . 1 . 1 1 . 1 1 α α α α α β ∂ = + − + = + − + ∂ = + + = − − + ,--".>/ + α₁ =α₁, _{. 1}/" • = 4 0 α1 0 α1 = + = − = + − ,--".@/

< + ₀ & = & ₀ 0 = 0 −α ,--".A/ 3α = 0 α1 0 α α1 = + − = + + − ,--"12/ * α₁ =α₁, _{. 1}/ 1 1 1 1 1 1 . 1 1 . 1 . 1 . 1 , / , / α α α α α α = ∂ = ∂ +∂ =∂ + +∂ + ∂ ∂ ∂ ∂ ∂ ,--"1./ = 1 1 1 . 1 = + = + ,--"11/ 1 1 1 1 . 1 1 . 1 . 1 α α _β α α ∂ ∂ ∂ ∂ = − − = − − ∂ ∂ ∂ ∂ 1 1 . . 1 1 0 , 1 α β / = − − + + + + " ,--"1 / 1 α = − − −β 3 >2 ,--"10/ # 1 1 1 . . 1 1 0 = − − − + ,--"1:/ 0 2 0 0 0 0 α 2 0 0 α = + + = − = + + − ,--"1</ 1 1 1 1 0 1 0 1 . 1 . . 1 1 0 1 0 α α α α α α α α β ∂ ∂ ∂ ∂ = + − + = + − − − − + ∂ ∂ ∂ ∂ = + + = − − + ,--"1>/ B . 1 , / α =α " • = 0 4 0 2 0 0 0 0 2 0 0 α α = + + = − = + + − ,--"1@/ * 0 & C " + 0 α 0 0 = 2+ 0+ 0 0 = 0−α ,--"1A/ . 1 1 1 α . α 1 α

> 7 & . 1 , / α =α . 1 . 1 1 . 1 0 . 1 , / , / , / α α α α α α α α ∂ ∂ ∂ = = + + ∂ ∂ ∂ ∂ ∂ ∂ = + + + + + ∂ ∂ ∂ ,--" 2/ * 0 1 0 0 0 0 0 . 1 = + = + ,--" ./ 0 0 . 1 0 0 1 0 . 1 . 1 α α α _β α α α ∂ ∂ ∂ ∂ ∂ ∂ = − − − = − − − ∂ ∂ ∂ ∂ ∂ ∂ 1 1 1 0 = − . . − 1 1 − + 0, + 2+ 0 +β0/ ,--" 1/ 0 0 0 0 α = − − −β 3 0 >2 0 2 0 0 . ,α / 2 = − ≠ ,--" / # ₀ = − _{. .}1− _{1 1}1− − _{0 0}1 0 2 0 0 2 0 0 1 . . 1 0 . . . 1 1 2 0 0 0 0 α α α α α α α α β = + + − ∂ ∂ ∂ ∂ ∂ ∂ ∂ = + + − + − − − − − ∂ ∂ ∂ ∂ ∂ ∂ ∂ = + + + = − − ,--" 0/ 7 $ % " # & α " D & 4 2 . ,α / = − ,--" :/ ! " ! !# + & " E " ,θ θ / 3 θ E " * & , / "

@ $ ! % # 4 1 , / 2 θ θ θ θ θ θ θ + + − = + − = ,--" </ 3 E ,--"./" * E E E , F " & $ ! % * " 4 1 , θ /, θ/ θ θ − _θ+ = + ,--" >/ 3 " E 4 . 1 1 . 1 . , / , / ϕ ϕ = = + = ,--" @/ # 4 1 1 . . . 1 . . , / , / , / , / , / 0 , / ϕ − + = − + ,--" A/ θ

A . 1 1 . , / , / , / 0 , / ϕ = + − ₊ ,--"02/ • ) & . ξ . . ξ = − = − ,--"0./ # 4 1 . 1 . . , /ξ = ξ & 3 . . . , /ξ =ξ ξ <2 . . . . 1 , /ξ =ξ , − /=ξ , − / ,--"01/ 1 = − . .ξ + ,--"0 / & 3 1 . . . . , /ξ =ξ ,− ξ + + /= − ξ ,--"00/ +3 _. >2 " • + E 1 ξ 1 1 1 1 . . ξ = − = + ξ − ,--"0:/ # = 1 1 . 1 . 1 . . , / 1 1 ξ ξ = ξ + ξ ,--"0</ . 1 . . 1 1 ,ξ ξ /=ξ ξ ξ ξ+ ,--"0>/ # 4 1 1 . 1 . . 1 . . . 1 ,ξ ξ /= − ξ +ξ φ, , /+ω, /+ −ξ ξ + ξ − / ,--"0@/ * 1 1 1 . . . 1 , / , / ω = − ξ ϕ− − +ξ ξ − ξ + ,--"0A/ 1 1 . 1 . . 1 1 ,ξ ξ /= −, ξ + ξ / ,--":2/ E = = . 1 ,ξ ξ /<2" 3 1 " = ,5#6/" = ,./ ,1/ ( E ,ξ ξ_{. 1}/ . . 1 1 1 . 1 . . ξ ξ ξ ξ ξ = − = − = + − = − + − ,--":./

02 . . . 1 ξ = − ξ ξ+ ,--":1/ 7 4 1 1 1 1 . . 1 1 . . . 1 . 1 ξ ξ ξ ξ ξ ϕ ϕ = − = + − = − + − + + ,--": / G 4 . . . 1 1 1 . . . 1 . 1 ξ ξ ξ ξ = −= − ξ++ ξ − +ϕ ϕ+ ,--":0/ 7 & 4 . 1 1 . . , / ϕ ω = = + = ,--"::/ # 1 1 , / , / ω ω =ϕ = _ϕ ,--":</ + ,--".0/ ,--"11/ 4 1 1 1 . . . 1 1 1 , / , / , / 2 ξ ϕ ξ ξ ξ ϕ ϕ − − − + − + = ≠ ,--":>/ ' ! & 1 . . 1 , / = − − + + ( , " --"1/ & ,--" @/ 4 . 1 . . , / H 1" , /I ϕ = − − ,--":@/ 1 1, / H.?, " /I ϕ = ,--":A/ ' & " & ' ! , /

0. ( ! ! ) F J " + , / ; ,--" /=,--"@/ 4 .2 2": . 2". = = = = ." .2 . , / ,1 / ,1 / = = = + 1" ,--" / ,--"</ E = = & ,--"0 --">/ & " + F E " + & & 9 2". . 1" & ) * ( " &

01 & + , # & - ) * ( " & . - , "--": "--"@/ & &

0 & / , # ' 0 " E ( " " ! E E E " F " F E " " ( ( E " % 1 % , K / & & " 6 & & , " --"A/ H1> ><I" 2 ! ! & " ( H1@I" # * * 6 6 6 & 3 ( ! %

00 . ,"/ ! ϕ θ 1,"/ ! ϕ θ ,"/ ! ϕ θ + + + + + + 1 . 4 . 1 . . 1 . . 1 . . . 1 . . , / " , / " , """ / " , /" , / " ! ! ! ! ϕ θ ϕ θ ϕ θ β ϕ θ − − − = + = + = + = + = ,--"<2/ 3 ϕ 4ℜ ℜ" θ∈ℜ" " β, / , / 2 β ≠ ∀ ∈ℜ & & ." # & (

& , & ∈ℜ /"H><I

* θ & θL & & " 7 & ( & 4 • ,--"<2/ • ϕ • • β, / β, /≠ ∀ ∈ℜ2 • ϕ • • M " ,--".2/ & β, / .= & " & 4 ( , # 2

0: ! 2 ) & & " & θ . , / ϕ ϕ,2/=2" ,-/ ,--/ 4 & θ . ,-/ 1 ,--/" (, # ) * 6 4 . 1 . 1 . , / "! ϕ θ = + = = ,--"<./ * θ _θL _" . . 1 1 . . . . . . L , / L L , / !" α θ α θ ϕ θ = − = − − = − − ,--"<1/ ) 1 . 1 L , θ/ " . . 1 . 1 1 1 . 1 1 . 1 . L L L , / α , !" / , / α " α θ ∂ ϕ θ θ ∂ = = − − + + + + + ∂ ∂ ,--"< / . 1 . . . . 1 1 . 1 . . . . 1 1 . 1 . 1 . " L , " / " L L L " , / " L ! ! ! α ϕ θ α α α α ϕ θ θ θ α α α ϕ θ θ θ θ = + + ∂ ∂ ∂ = − = − + − − − ∂ ∂ ∂ ∂ ∂ ∂ = − − − − + − − ∂ ∂ ∂ ,--"<0/ 4 θ θ θ= − L" 7 & ,--"<0/ 4 . 1, . 1 L/ _L L α θ θ θ ∂ = ∂ ,--"<:/ 6 & θ , --":A/" * & N ! L _, L_/" 1 θ = Γτ θ +

0< 1 1 . 1 . 1 . . . 1 1 1 ! θ −θ = + + Γ ,--"<</ L θ = −θ ₁ & 1 1 . 1 . . 1 1 . 1 . . 1 1 . . . . . 1 1 1 . L H I L ! ! ! ! ϕ α _ϕ θ θ θ α θ ϕ ϕ θ − − = − − ∂ − Γ − ∂ ∂ = − − + Γ Γ − − ∂ ,--"<>/ & θ ! . . 1 1 . L _, L_/ α θ = Γτ θ = Γ ϕ −∂ ϕ ∂ ,--"<@/ & . . . . . 1 . 1 . . 1 . , / L , / , / τ ϕ α τ θ τ ϕ = ∂ = − ∂ ,--"<A/ # 1 =2 " 1 1 1 = − . . − 1 1 ≤2 ,--">2/ 7 & .= _→∞ ., /= " & ( ! % 1 L θ & " & " ( ! ! ) F J " + ; ,--".1=--".>/ 4 . . ! ! ϕ α ϕ ∂ − ∂ . . ! ! ϕ α _ϕ ∂ − ∂ . . . ₁ − − − Γ . 1 L θ θ θ τ1

5

0> 1* $ !# ! . 1 . 1 1 . . . L . 122 122 H1 .I H. 2"@I ,2/ . ,2/ . , / H , / I " ! ! ! θ θ ϕ = = = = = = − = − = & ( 6 " & & , #

0@ - & & 9 " 8 & 9 ( & " * $ !# . 1 . 1 1 . . . L , ? 2/" , / :22 :22 H.: 12I H.. .@I ,2/ 2 ,2/ 2 , / H , / I " ! ! ! " θ θ ϕ = = = = = = = = & + ( 6 " & - , #

0A & . B O & " & & , "--".>/ & & " (, # ) * 6 4 . 1 . 1 . , /! ϕ θ = + = = = " ,--">./ & ,--"<./" 1, . 1 L/ α θ & ,--"< / ( " + & = $ % & 4 1, . 1 L/ α θ = − − ,--">1/ 7 ! ,--"<@/ & 1 4 . 1 . 1 1 . 1 L L , / , / L α θ τ θ θ ∂ = Γ ∂ ,--"> / 1 τ & " # ,--":A/ ,--">1/ ,--"<A/ ,--"> / 4 . . . . . 1 1 1 1 . 2 . L . , / L ! ! ϕ θ α _ϕ α _{τ θ} θ − = _{− −} + ₋∂ + ∂ + Γ − ∂ ∂ ,--">0/ & 4 1 1 . . 1 . . 1 1 1 1 1 1 L L , / , / L ! α τ θ θ τ θ θ − ∂ = − − + + Γ − + − Γ ∂ ,--">:/ & & ,--">1/ 4

:2 , / 1 1 1 1 1 . 1 . L L , / L ! ! α α α α ϕ θ θ ϕ θ θ ∂ ∂ ∂ ∂ = − + − − − − ∂ ∂ ∂ ∂ ,--"></ 1 1 1 1 . 1 . 1 . . . . . 1 1 1 1 1 ! θ −θ = + = + + + Γ ,--">>/ & 4 1 1 . . . 1 1 1 , / 1 1 1 1 1 1 1 . 1 . 1 1 . L , / L L L , / L L , /" ! ! α τ θ θ α α α α α ϕ θ θ θ α θ τ ϕ −θ ∂ = − + + Γ − ∂ ∂ ∂ ∂ ∂ ∂ + + − + − − − − − ∂ ∂ ∂ ∂ ∂ ∂ + − − Γ ∂ ,--">@/ &

θ

! 4 1 . 1 1 . L _, L_{/ ,} α _/ θ = Γτ θ = Γ τ − ∂ ϕ ∂ ,--">A/ # & ,--">@/ 1 1 . 1 1 1 . 1 L L , / α , ! / α α θ ∂ ϕ θ ∂ = = − − + + + + ∂ ∂ ,--"@2/ 1 1 1 . 1 . . 1 1 1 _L , 1 L/ , _L L/" α α τ θ θ θ θ ∂ ∂ = − − − + Γ − + − ∂ ∂ ,--"@./ )& & ,--"@./ 1 L L α _θ θ ∂ ∂ . 1 1 L , / L α τ θ θ ∂ Γ − ∂ ( 4 1 1 1 . L L L α θ − Γτ = − Γ + Γ − Γθ τ τ τ = − Γ − Γθ τ ∂ ϕ ∂ ,--"@1/ & & ,--"@./ ( 4 1 1 1 1 . 1 . . 1 1 1 . , / L L α α α τ ϕ θ θ ∂ ∂ ∂ = − − − + − Γ + Γ ∂ ∂ ∂ ,--"@ / 7 & ,--"@ / ( 4 . 1 1 . 1 1 . L , / L L α α α θ τ ϕ θ θ ∂ ∂ ∂ = Γ − Γ ∂ ∂ ∂ ,--"@0/ & ,--"@ / & 4 1 1 1 . . 1 1 2 = − − − ≤ ,--"@:/ & .= _→∞ ., /= "

:. % % & " & P H1A 2I" + & & # # "L = H><I" & , / & ,G " --".@/" & / ( !2 % & & & " & " % % % * & !

& & & " +

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:1 ) ( 4 .= Q 1= =$, / ( Q = " . 1 . 1 1 . , / , / , /" , / ! ! ! φ θ φ θ β φ θ = + = + = + = ,--"@</ 4 " φ ℜ → ℜ θ∈ℜ" " ) ,--"@</ ( 4 .= & 1= & = & " * _B , / , / ! % φ θ & = + + ,--"@>/ 3

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. . . 1 . 1 2 . 2 2 2 2 2 2 . 2 2 2 2 2 2 2 , / , / , / , / 2 2 2 2 . 2 2 2 2 2 . 2 2 2 2 2 2 2 2 . ! ! ! ! ! ! " % & φ φ φ φ θ θ θ θ = = = = = 7 % ! 0 2 ! # ' & " * (, # 2 * & 4 . 1 . 1 1 . , / , / ! ! φ θ θ φ θ = + = + = ,--"@@/

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L ε = + ,--"A2/ & & L 4 .= ξ 1= λ θ " = θ " & 4 L=ξ, /+λ θ, / + , /θ ,--"A./ 1 1 ' 1 ξ_∈ℜ λ_∈ℜ × _∈ℜ " θ θ ,--"A./ ξ λ 4 . , / % ( ( ξ = ξ− ξ + ,--"A1/ . , / _{% (} !, / λ = λ− λ φ+ ,--"A / . , /= % −( +& ,--"A0/ . 1 ! ( = "

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L , , / , / , / / ,, / , , // , / / , / , , // , / ! ! % ( ( % ( % ( & % ( & ε ξ λ θ θ ξ ξ λ λ φ θ θ ξ λθ θ ξ λ θ θ φ θ θ = − = − + + = − − + + − + + − + = − + + + − + + + + ,--"A:/

& ,--"0/ & ,--"A:/ 4

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. . . , / , , // L , L / % % ( % % ( % ( ε ξ λθ θ ξ λ θ θ ε ε = − + + + − + + = − − − = − ,--"A</ . 1 ! ε = ε ε "

& & ,--"A</ 4

2 % ε = ε ,--"A>/ . 2 1 . 2 % = − − ( %2 "

:0 * 9 " ' & & & " ! 4 . 1 1 . L θ α = − = − − ,--"A@/ . α " • . α " * ! " + )∈ℜ1 1× )>2 )! =) M 4 2 2 ! )% +% )= −* ,--"AA/ 4 1 1 . . . . . . . 1 1 1 ! ! ) θ θ θ ε ε = + + + ,--".22/ 6 & . . . . . _L . _L . 1 ! ! θ θ θ θ ε ε = − − − ,--".2./

& ,--"A2/ ,--"A@/

. 1 . , / L1 1 . , / ! ! φ θ ε φ θ = = + = + + ,--".21/ & 4 1 . 1 1 . 1 . 1 1 . 1 . 1 1 L , / L , !/ , !/ ε φ θ α ξ λ φ θ λ φ θ θ ε = + + − = + + + + + + + + ,--".2 / * ! 1 & & 3

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. . . 1 1 . . . L , !/ α = − − ξ + λ φ θ+ − ,--".20/ . 1 . . , 1 . / 1 1 ! λ φ θ θ ε = − + + + + ,--".2:/ 7 4 . . 1 . . . . 1 . 1 1 1 ₁ 1 1 1 . . . 1 . . . . 1 . . 1 . _L . _L . , , / / 1 . 1 0 . _L . _L , / ! ! ! ! ! ! ! λ φ θ θ ε θ θ θ θ ε ε ε ε _{ε ε} θ λ φ θ θ θ = − − + + + + + − + − − = − − − + − + + + − + − 1 1 . . 1 . 1 1 ! ε ε ε = ε ε _ε =ε +ε

:: & 4 1 _{1 1} 1 1 1 . . . . 1 . 1 . 1 . . . 1 _{1 1} 1 1 1 . . . . 1 . 1 . 1 . . . . _L . _L , / 1 0 . _L . _L , / 1 0 0 ! ! ! ! ! ! ε ε ε θ λ φ θ θ θ ε ε ε _{θ λ φ θ θ θ} = − − − − − + + + − + − ≤ − − − − − + + + − + − ≤ − 1 . . . 1 . 1 . 1 . . _L . _L , / ,--".2</ 0 ! ! ! ! ε ε θ λ φ θ θ θ − + + + − + − 4 . . 1 . . 1 , !/! τ λ φ τ = + = ,--".2>/ & ,--".2</ & 1 . . . . 1 . . . . _L . _L 0 ! ! ε ε θ τ θ θ τ θ = − − + + − + − ,--".2@/ • ( 1 & & & 4 1 . 1 1 . 1 1 . ! ) ε ε = + + ,--".2A/ 7 1 . 1 1 1 . ε ε! = + − ,--"..2/ )& ,--"11/ 4 1 1 . . . 1 . . 1 1 . 1 1 . . 1 . 1 . . . 1 . _L . _L . 0 . . _L . _L , / 0 ! ! ! ! ! ! ε ε θ τ θ θ τ θ ε ε ε ε ε ε θ τ θ θ τ θ ≤ − − + + − + − + − ≤ − − + + − + − + − ,--".../ # ,--"A0/ ,--"A@/ , _.+ ₁/ 4 1 . . 1 . . . 1 . 1 . . . . . . . . _{. . .} L , / , / L L , / L L L L θ α α θ θ α _ξ α _λ α α α _θ α _θ ξ λ θ θ = − − = + ∂ = + − + + − − ∂ ∂ ∂ ∂ ∂ ∂ ∂ − + + − − − ∂ ∂ ∂ ∂ ∂ ∂ ,--"..1/ # . . . . . . . . . _{. . .} L L L L α α α α α α α α ξ λ θ θ ξ λ θ θ = ∂ ∂ ∂ ∂ ∂ ∂ ∂ = + + + − − − ∂ ∂ ∂ ∂ ∂ ∂ ∂ ,--".. / R ,--".20/α_. ξ₁ λ₁ θL & 4

:< . . . . . . 1 1 1 1 L L α α α α α α ξ λ θ ξ λ θ ∂ ∂ ∂ ∂ ∂ = + + + + ∂ ∂ ∂ ∂ ∂ & ,--"..1/ . . . . . . 1 . 1 . 1 1 1 1 . . . . . . 1 . 1 1 1 1 L L L , / , / L L L L L L α α α α α θ θ ξ λ θ ξ λ θ α α α α α θ θ θ ξ λ θ ξ λ θ ∂ ∂ ∂ ∂ ∂ + = + − + + − − − − − − ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ = + − + − − − − − − ∂ ∂ ∂ ∂ ∂ ,--"..0/ + ,--".21/ . . 1 . 1 . 1 1 1 1 1 1 . . . . 1 . . 1 1 1 L L L L L , / , L _/ L L ! ! α θ θ θ ξ λ θ λ θ θ θ α α α α ε φ θ φ θ ξ λ θ ξ λ θ ∂ + = + − + − − + + + + ∂ ∂ ∂ ∂ ∂ + + + − − − − ∂ ∂ ∂ ∂ ,--"..:/ M 1 1 ξ λ " # ! 1 & " + 1 L α = θ α₁ 4 . . 1 1 1 . 1 . 1 1 . 1 1 . . . . 1 1 1 1 1 1 1 1 1 L _{, , /}L L _/ L ! α α α θ ξ λ φ θ θ α α α α ξ λ τ τ ξ λ θ ∂ ∂ = − − − − − − + + + ∂ ∂ ∂ ∂ ∂ ∂ − − − + − − ∂ ∂ ∂ ∂ ,--"..</ # 1 1 τ τ ( " & ,--"..:/ 4 . . 1 1 1 1 1 1 1 . 1 . . . 1 1 1 1 1 L , / , / L L L ! α θ λ θ θ ε φ θ α _θ α _{τ τ} α θ θ ∂ + = − + − + + + ∂ ∂ ∂ ∂ − + − − ∂ ∂ ∂ ,--"..>/ & 4 1 . . 1 . . 1 1 1 1 1 1 1 . . 1 . . 1 1 1 1 1 . . 1 1 1 1 . . . 1 1 1 1 . L _{, /} L L 0 . . _L . _L L 0 ! ! ! ! ! α α ε ε θ λ θ θ ε φ θ θ θ α _{τ τ} α _{ε ε θ τ θ θ τ θ} θ α ε ε ∂ ∂ ≤ − − + − + − + + + − ∂ ∂ ∂ ∂ + − − − − + − + − ∂ ∂ ∂ ≤ − − − − − ∂ 1 . 1 1 1 . . 1 1 1 1 . . . 1 1 1 1 1 . . . _L . _L , / L . _L . _L ! ! ! ! α ε ε ε α _{τ θ θ} α _{λ φ τ θ} θ α τ θ θ τ θ ∂ + − − ∂ ∂ ∂ + − + − + + − ∂ ∂ ∂ − − + − + − ∂ ,--"..@/

:> * & . 1 _L α _θ θ ∂ ∂ & 1 1 θ 4 . 1 1 1 . . . 1 1 1 . , !/! α τ λ φ τ α τ τ ∂ = − + + ∂ ∂ = − + ∂ ,--"..A/ & & 4 1 1 . 1 . . 1 1 1 1 . 1 1 1 1 1 . L L 0 . _L . _L . _L ! ! α ε ε τ θ θ θ τ θ τ θ θ τ θ ∂ ≤ − − − − − ∂ + − − − + − ,--".12/ • ) ! 4 . . . 1 . 1 . 1 1 . 1 1 . . . . 1 1 1 1 1 1 1 1 1 . _{L L L} , , / / L L ! α α θ ξ λ φ θ θ θ α _ξ α _λ α _{τ τ} α ξ λ θ ∂ ∂ = − − − − − − + + + ∂ ∂ ∂ ∂ ∂ ∂ − − − + − − ∂ ∂ ∂ ∂ ,--".1./ . 1 1 . 1 . . 1 1 . 1 L _{, /} L ! ! α θ τ λ φ α θ τ ∂ = = − + + ∂ ∂ = = − + ∂ ,--".11/ ) 4 1 1 1 1 . . 0 ! + + + ε ε = = ≤ − − ,--".1 / 7 = ₁ < ∀2 , ε/≠2

,--"@A/ & ,--"A./"

! 2 $ ! ! ,--" @ --":@=--":A/ , " --"1/" M ( , / , = = , /= / " , /= & 4 1 + = ,--".10/ & 4

:@ . 1 1 1 . . . = = − + = ,--".1:/ 1 . θ = − θ = & ,--".1:/ ( . 1 1 . . , / θ ϕ θ = = + = ,--".1</ 3 ϕ, /_. = _. " & 4 L=ζ, /+λ θ, /" + , /"θ ,--".1>/ 1 1 1 ' ζ _∈ℜ λ_{∈ℜ ∈ℜ} × _" θ θ & ,--".1>/ & " 7 ζ λ & 4 . , / % ( ( ζ = ζ − ζ + ,--".1@/ . 2 , / % ( λ λ λ ϕ = − + ,--".1A/ . 2 % ( = − + ,--". 2/ 3 . 1 2 . 2 2 %= ( = " ,--".1>=. 2/ & 4 . . . . . . . L , , / , / , / / 2 2 , / , / 2 2 , / , , // , / % ( ( % ( % ( % ( % ( ε ζ λ θ θ ζ ζ λ λ θ θ ϕ ζ λθ θ ζ λθ θ θ θ ϕ ε ε = − = − + + = − − + + − + + − + = − + + + − + + + + = − ,--". ./ . . 1 1 2 . 2 2 % ε ε ( ε = = = " # & ,--". ./ & 4 1 . . 2 1 . % ε ε ε = −_ε = ε − ,--". 1/

:A . 2 1 . 2 % = − ( − %2 S T 9 , & 1 . 1 2 + + = /" • + 4 . 1 1 . L θ α = − = − − ,--". / 3 α_. " 6 )∈ℜ1 1× 2 2 2 ! ! )> ) =) , )% +% )= −* 4 1 1 . . . . . . . 1 1 1 ! ! ) θ θ θ ε ε = + + + ,--". 0/ & . . . . . . . _L . _L . . _L . _L . , / ! ! ! ! θ θ θ θ ε ε θ θ θ θ ε ε = + − + − − = − + − + − − ,--". :/ . 1 L1 ε1 ζ1, / λ θ1, / 1, /θ ε1 = = = + = + + + ,--". </ . . 1 1 1 1 . . . . 1 1 . 1 . 1 . 1 . . _L . _L . , / . . . L L L , / ! ! ! ! ! ζ λ θ θ ε θ θ θ θ ε ε α ζ λ θ ε θ λ θ θ θ ε ε = + + + − + − + − − = + + + + + − + − − ,--". >/ + & 4

(

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./ % ! 6 " # # # # 1284" 1/=4 5 # % " " ; # $ . =. # $ " K . > # " . . . = =. " . > * " " % > . = =. ." % ; ! $ < ' ) % 8 /9: 8 5 " . ' E ) 1/74<1/-4 5 # : ' 7) . . = =. =. − = '5; 7C) &" .= =. =.' −7)=. .' ) ' ) . . " . . = =. " ' -< ) 5 # .' " " ) # " # .' " ' )" ' )) % 8 / ; 5 17=4" < 7" ' ) ." 7" ' ) ." 7" / . . . . . . α α − > = − > ≤ − ≤ ≤ '5; 78) : . / α >α >

.0 ' ) ' ) ' ) ' " " ) ' " " ) ' ' " ))" . . . ∂ ∂ Λ ⋅ = ⋅ + ⋅ ∂ ∂ = Λ Λ Λ < '5; -.) &" >. . '78)" # <7".<._. : . . .= Λ Λ +. ∂ = Λ Λ −. α ∂ ∂ ∂ '5; -7) &" ' )" . ' )" . / . . . . . . α α α − > = − ≤ ! # # '-< ) < : 7 ∂. ∂ # E - # ₊' " )

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⊂ −7"7 = '5; 78) . ! " # . . . α ∂ > Λ Λ ∂ . .<. ' # . . α ∂ > ∂ ) ! $ + > $ , , .. '( 5; 77) 3 # . .<. # . ..< # * . . . α _> % $ . . . α _< * ) ' " ). . . .

. - ! < ' 9 J !) " " # $ E " 7 . 7 . 7 " 7" " 7 ' " " ) ' " " ) φ β + = = − = + '5; --) & φ_.' )"⋅ β_.' )⋅ 'β_.' )⋅ )" '5; --) " $ # # " 1/24 6 & " " " I 9 J ! % + 1/34 # " $ # ρ −7 # 'ρ # # )" # " $ " # " " # " # .=." 0 # $ # " $ # < 9 J ! # 1//4 " 1/34 0 " 9 J < ' ) % " # " # # # # # " " # " # % " # # # # 0 " + # " -< < % < " <$< " 7 7 7 7 7 7 7 7 " " 7 7 ' " " " " " " ) ' ' ' )) + ' ' )) ) ' ' )) γ γ γ ρ ρ γ γ ρ ρ γ φ θ β θ φ θ + + + + + + − + + − + + + + = = + = + + '5; -=)

.) &" =7" " "ρ 0 < " 7 7 ' ' γ − ρ = = " ' )= ₇' ) " " _γ ' ) ∈ℜ " 7" " θ = θ θ ∈ℜ " φ_γ+7' ' ))∈ℜ 9 " 7"7 7"7 7" 7" " " "7 "7 ' ' )" ) + " + " " + " + " β β β β β + + = + + ' ' )" )" β ∈ℜ × " " " "∈ℜ β ' # ' ' )" )" β " " θ L θ) * " β' ' )" )" M # " β , # 7 ' ) ' )" 7" " " = _{γ +} = " , ' , ) 6 " $ ρ # " - * < < , $ < < " ' 7) " 7 1_{γ +} = _γ+ − − −α_{γ+ −} '5; -3) 7" " " 7" "ρ = = & α_{γ + −7} $ γ + −7" '_"−7) 7 − " " " = γ +7 ' % ) 6 " " <$< " α_{γ +} $ γ +

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1= 1 1 $ #

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! % $ # α_γ+7 7 γ α ₊ =7" " " ' ' )" ' )) α N < < $ γ + " <$< " ' ) 7 7 " 1_{γ + +} = _{γ + +} − −α_{γ +} '5; -2)

.* - 7 7 7 _{7 L L} ' ) ' ) - -- 1 γ γ θ θ θ θ + − + = = + − Γ − '5; -/) 7 7 7 7 7 7 7 7 7 7 " 7 7 " L L L 1 1 2 1 γ γ γ γ γ γ γ γ γ γ γ γ α α α θ θ α α τ θ + − + − + + − + + + + + = = + + + − + − + − = ∂ ∂ = − − + Γ − + ∂ ∂ ∂ ∂ + + ∂ ∂ '5; -A) 7 7 2_γ+ φ_{γ +} αγ + − φ = ∂ = − ∂ '5; -C) 7 1 2 γ γ γ γ τ + = Γ + + +τ + − '5; -8) 7 7 7 7 7 ' ) L ' ) L L 1 1 1 1 2 1 2 γ γ γ γ γ γ γ γ γ γ θ α α τ θ θ θ + + − + + + + + − + + + + = = − − + + ∂ ∂ + Γ − − ∂ ∂ '5; =.) " =7" " " =." "ρ α" _γ =."τ_. =

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∈ℜ _γ+ " # τ_{γ +} $ γ + 9 # # # # $ _{γ +} ' # α_γ =.) ! # $ γ " 7 7 " 1_{γ +} = _{γ +} − : " # # 7 γ α ₊ ( " # < ' +7)0 < τ - ( " " $ < " " # γ + " # " $ " " 7 ' ) L ' )=β' ' )" )θ α− ' ' ))+ ∗ ' ) '5; =7) &" 7 7 7 7 7 7 7 7 -7 7 7 7 '7 ) ' ' )" ) '7 ) " ρ ρ ρ γ γ α α β β β α _β α _β + + − − = − − − = ∂ ∂ − − ∂ ∂ = ∂ ∂ − − ∂ ∂ " β β' ' ))" ' ) ' 7) ' ) 7" ' )" " " ' ) ρ ρ ∗ _{= "}

.+ 7 7 7 7 7 7 7 7 ' ) ' ' )) ' ) ρ ρ γ γ α α β α α α β + + − = − = ∂ − = ∂ − * " '5; -2)<'5; -8) % " # $ 7 7 γ ₊ − " α_γ " 7 γ ₊ + -7 7 7 7 ' ) "7 " 7 7 7 "- "7 1 ρ γ₊ αγ₊− γ₊− γ₊− = − − + = '5; =-) & 7 7 γ₊− $ # # 7 7 1_γ +− " " # " " 6 " 7 7 7 7 7 7 7 7 7 - 7 7 7 "7 7 3 -7 7 7 L ' ) ' ) L ' ) L L 1 1 1 2 1 2 γ γ γ γ γ γ ρ γ γ γ γ γ θ θ α α τ θ θ θ + + + + + + + + − − − − − − − − + − + − = = − − + + + − ∂ ∂ − − + Γ ∂ ∂ '5; ==) ! " : L L L L L ' " ) ' " ) ' " ) L L ' " " " " ) ' " " " ) 1 3 1 1 4 1 5 1 6 7 1 8 1 θ θ θ θ θ θ θ θ θ = + + + = + '5; =3) 9&" 7 7 7 -7" " 7" 7" " 7 " 7"7" " "7" 7"-" " "- " " " " " 1 1 1_γ 1_γ 1_γ 3 7 8 4 5 +− ++ +− = = ∈ℜ 6 # 0 : @7 7 L _{4 1' " )}L ₁ γ θ τ= ₋ = Γ θ '5; =2) & 7 7 γ τ +− $ ' −7)" #

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γ τ = ∈ℜ " # '5; =3) $ " L L ' " ) ' " ) 1= 3 1θ 1 4 1+ θ θ +6 '5; =/) > '5; =3)" " 7 _{L L} ' ' ) ' )) -- = 1 1+ −θ θ Γ −θ θ '5; =A) - '5; -2)< '5; =.)" θL Γ4 1' " )θL 1 :