Munich Personal RePEc Archive
The Impact of Firm Size and Market Size Asymmetries on National Mergers in a Three-Country Model
Santos-Pinto, Luís
University of Lausanne
26 August 2009
Online at https://mpra.ub.uni-muenchen.de/17166/
MPRA Paper No. 17166, posted 07 Sep 2009 19:12 UTC
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#
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#
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#
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- " 0 ! *
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s ) % ( s( s ! 0 πss1=
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qL1= (a−c+ ∆)/3γ qL2= (a−c−2∆)/3γ L ) ( L ( L πLL1= (a−c+ ∆)2/9γ πLL2= (a−c−2∆)2/9γ.
J 0 t ! 0 "
qs1t = a−c 2β −1
2 qts2+qL1t +qtL2 qs2t = a−c−∆
2β −1
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2β −1
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2β −1
2 qs1t +qts2+qL1t
! * 0 qs1t = qL1t = (a−c+ 2∆)/5β qs2t = qL2t = (a−c−3∆)/5β) ( s L ( t ! 0 πts1 =πtL1 = (a−c+ 2∆)2/25β πts2=πtL2= (a−c−3∆)2/25β)
s( s 0 J 0 J
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L( % J 0 t ! 0
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2β −1
2 qts1+s2+qtL2 qtL2 = a−c−∆
2β −1
2 qs1+s2t +qL1t
! * 0 qts1+s2=qtL1= (a−c+ ∆)/4β qtL2= (a−c− 3∆)/4β. ( s( t πts1+s2= (a−c+ ∆)2/16β.
s( ( 0 * L ( (
3$
s( ( s( 0
% %
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4 +(a−c+ ∆)2
16β ≥ (a−c+ ∆)2 9 +(a−c−2∆)2
9 +(a−c+ 2∆)2
25β +(a−c−3∆)2
25β .
! J * β* 0 β≥fsL1,L2(δ)* !
+ ,) s( 0 L( % J 0 t !
0 "
qs1t = a−c 2β −1
2 qts2+qL1+L2t qs2t = a−c−∆
2β −1
2 qs1t +qtL1+L2 qL1+L2t = a−c
2β −1
2 qts1+qs2t
qtL1+L2 = qs1t = (a−c+ ∆)/4β qs2t = (a−c−3∆)/4β. ( s1 t πts1 = (a−c+ ∆)2/16β
( s2 πts2= (a−c−3∆)2/16β. s( L( *
! t) J 0 J t qs1+s2t =
qL1+L2t = (a−c)/3β ( s( 0 πts1+s2= (a−c)2/9β.
% s( ( 0 * L(
(a−c)2 1 4+ 1
9β ≥(a−c+ ∆)2 1 9+ 1
16β +(a−c−2∆)2
9 +(a−c−3∆)2
16β .
! J * β* 0 β≥fsL1+L2(δ)* !
+ ,) % L( ( 0 * s(
(a−c)2
4γ +(a−c+ ∆)2
16β ≥ (a−c+ ∆)2 9γ +(a−c+ 2∆)2
25β +(a−c−2∆)2
9γ +(a−c−3∆)2
25β .
! J * β* 0 β≥fLs1,s2(δ, γ)* !
+ ,) L( ( 0 * s(
(a−c)2 1 4γ+ 1
9β ≥(a−c+ ∆)2 1 9γ+ 1
16β +(a−c−2∆)2
9γ +(a−c−3∆)2
16β .
! J * β* 0 β≥fLs1+s2(δ, γ)* !
+ !,) 4 , 5
36
" + , H * 3 + , ( s
* * ( L * fsL1,L2(δ)≤β≤1.H *
+ , ( s* * ( L
* fsL1+L2(δ)≤β≤1. * ( s
! * ( L fsL1,L2(δ)−fsL1+L2(δ) =
1
10013+162δ−603δ
1+8δ−20δ >0 δ∈[0,1/3])
+ , ( L ) 3 + , * !
fsL1,L2(δ)≤0 δ∈[7/61,1/3]. δ∈[7/61,1/3]% (
s * * ( L β) 5 * ! %
δ∈[0,7/61)% ( s * * ( L
β≥fsL1,L2(δ))
+ , ( L ) 3 + , * !
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* ( L δ) 5 * ! % β∈(0,0.63)% ( s
* * ( L β≥fsL1,L2(δ))
+ !, H * 3 + , ( s* * (
L * fsL1,L2(δ)≤β≤1.H * 3 + ,
( L* * ( s * fLs1,s2(δ, γ)≤
β≤1. * ( L * ( s
! * ( s
* ( L fLs1,s2(δ, γ)≤fsL1,L2(δ)
(γ, δ)) 4 , 5
0 . 0 ( )
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L+ , ( * ( L +
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< 0 ( 0 F2,γ J 0 0 6,(F2,γ))
0
s L M N
m
(a−c) 4
+(a−c)9β ,
(a−c) 4γ
+(a−c)9β
(a−c) 4
+(a−c+∆)16β ,
(a−c+∆) +(a−c−2∆) 9γ
+(a−c+∆) +(a−c−3∆) 16β
n
(a−c+∆) +(a−c−2∆) 9
+(a−c+∆) +(a−c−3∆)
16β ,
(a−c) 4γ
+(a−c+∆)16β
(a−c+∆) +(a−c−2∆) 9
+(a−c+2∆) +(a−c−3∆)
25β ,
(a−c+∆) +(a−c−2∆) 9γ
+(a−c+2∆) +(a−c−3∆) 25β
3A
- " . δ∗(γ) = 750−549γ50−63γ .
" (γ, δ) 0 < γ < 0.794 0 ≤ δ ≤ δ∗(γ), fLs1+s2(δ, γ) <
fLs1,s2(δ, γ)< fsL1+L2(δ)< fsL1,L2(δ).
" δ=δ∗(γ), fLs1+s2(δ, γ)< fLs1,s2(δ, γ) =fsL1+L2(δ)< fsL1,L2(δ).
" (γ, δ) 0< γ ≤0.794 δ∗(γ)< δ≤0.0(6), fLs1+s2(δ, γ)<
fsL1+L2(δ)< fLs1,s2(δ, γ)< fsL1,L2(δ).
" 0.794< γ <1, fLs1+s2(δ, γ)< fsL1+L2(δ)< fLs1,s2(δ, γ)< fsL1,L2(δ).
" γ= 1, fLs1+s2(δ, γ) =fsL1+L2(δ)< fLs1,s2(δ, γ) =fsL1,L2(δ).
- " δ∗(γ) 0 0 ! fsL1+L2(δ) = fLs1,s2(δ, γ)
* δ) *% 0 < γ < 0.794 0 ≤ δ∗(γ) ≤ 0.0(6). %
0 < γ < 0.794 0 ≤ δ ≤ δ∗(γ), fLs1,s2(δ, γ) < fsL1+L2(δ). 5 * ! % 0 < γ ≤0.794 δ∗(γ) < δ ≤ 0.0(6), fsL1+L2(δ) < fLs1,s2(δ, γ).
( fLs1+s2(δ, γ) fsL1+L2(δ) fLs1+s2(δ, γ) < fsL1+L2(δ) γ∈(0,1) fLs1+s2(δ, γ) =fsL1+L2(δ)* γ= 1. % ( fLs1,s2(δ, γ) fsL1,L2(δ) fLs1,s2(δ, γ) < fsL1,L2(δ) γ ∈ (0,1)
fLs1+s2(δ, γ) =fsL1+L2(δ)* γ= 1. + , +!,) 4 , 5
" + , 0.74≤γ≤1 β≤fsL1+L2(δ),
# + !, β ≤ fsL1+L2(δ) < fsL1,L2(δ)) ) 3 + , + , *
β ≤ fsL1+L2(δ) < fsL1,L2(δ) m (
s) % ( s n) β ≤ fsL1+L2(δ), # + !,
β < fLs1,s2(δ, γ). ) 3 + , * β < fLs1,s2(δ, γ)
0 ( L n N) % ( L * N) %
6,(F2,γ) = (n, N) 0.794≤γ≤1 β≤fsL1+L2(δ).
+ , 0.794 ≤ γ ≤ 1 fsL1+L2(δ) < β ≤ fLs1,s2(δ, γ), # + !, fLs1+s2(δ, γ)< fsL1+L2(δ)< β≤fLs1,s2(δ, γ)< fsL1,L2(δ). fsL1+L2(δ)<
β < fsL1,L2(δ)% ) 3 + , 0 ( s N
n ) 3 + , 0 ( s M m)
fLs1+s2(δ, γ)< β≤fLs1,s2(δ, γ)% ) 3 + , 0
( L n N ) 3 + !, 0 (
L m M) %(n, N) (m, M) J 0 + -
* , F2,γ * 0.794 ≤γ ≤1 fsL1+L2(δ)}< β ≤fLs1,s2(δ, γ))
/ / J 0 + - * , *
( s 0 * m n ( L . 0 *
M N"
ps
(a−c)2
4γ +(a−c)2
9β + (1−ps) (a−c)2
4γ +(a−c+ ∆)2 16β
=ps
(a−c+ ∆)2
9γ +(a−c+ ∆)2
16β +(a−c−2∆)2
9γ +(a−c−3∆)2 16β +(1−ps) (a−c+ ∆)2
9γ +(a−c+ 2∆)2
25β +(a−c−2∆)2
9γ +(a−c−3∆)2
25β ,
3'
* ps 0 0 ( s m) ! J ps
* 0 +3,) L 0 * M N ( s
. 0 * m n) pL 0 0 ( L
M) γ= 1 +3, * 0 +#,) % 0.794≤γ≤1 fsL1+L2(δ)<
β≤fLs1,s2(δ, γ),* ! 6,(F2,γ) ={(n, N),(m, M),(ps, m;pL, M)}.
+ , 0.794≤γ≤1 fLs1,s2(δ, γ)< β, # + !, fLs1+s2(δ, γ)
< fLs1,s2(δ, γ)< β) ) 3 + , + !, * fLs1+s2(δ, γ)< fLs1,s2(δ, γ)
< β N ( L) % ( L
M) fLs1,s2(δ, γ)< β, # + !, fsL1+L2(δ)< β. ) 3
+ , * fsL1+L2(δ)< β 0 ( s
M m) % ( s m) % 0.794≤γ≤1 β≤fsL1+L2(δ)
* ! 6,(F2,γ) = (m, M). 4 , 5
" + , 0 < γ < 0.794 β ≤ min[fsL1+L2(δ), fLs1,s2(δ, γ)], # + , + , β≤fsL1+L2(δ)< fsL1,L2(δ)) ) 3 + , + , * β ≤fsL1+L2(δ)< fsL1,L2(δ) m
( s) % ( s n) β≤fLs1,s2(δ, γ),
) 3 + , 0 ( L n N) % (
L* N) % 0< γ <0.794 β≤min{fsL1+L2(δ), fLs1,s2(δ, γ)}
* ! 6,(F2,γ) = (n, N).
+ , 0< γ <0.794 fLs1,s2(δ, γ)≤β≤fsL1+L2(δ)% # + , fLs1+s2(δ, γ)< fLs1,s2(δ, γ)≤β≤fsL1+L2(δ)< fsL1,L2(δ). ) 3 + , + !, * fLs1+s2(δ, γ) < fLs1,s2(δ, γ) ≤ β N
( L) % ( L M) ) 3 + ,
+ , * β≤fsL1+L2(δ)< fsL1,L2(δ) m
( s) % ( s n) % 0 < γ < 0.794
fLs1,s2(δ, γ) ≤ β ≤ fsL1+L2(δ) * ! 6,(F2,γ) = (n, M).
+ , + !, + , + , ) #%
! ) 4 , 5
- "
" 0< β ≤gsL1,L2(δ) = 509 −7+82δ−183δ 5−32δ+44δ ,
#
" 0 < β ≤ gsL1+L2(δ) = −1+18δ−45δ5−32δ+44δ ,
#
" 0< β ≤gs1,s2L (δ, γ) = 9γ50−7+82δ−183δ 5−32δ+44δ ,
#
" 0< β≤gLs1+s2(δ, γ) =γ−1+18δ−45δ5−32δ+44δ
- " 0 *
! * ! L)
s ! 0 CSs= (a−ps)Qs/2 =Q2s/2,* Qs
0 s( ) s( % Qs= (2a−2c−∆)/3
#&
CSs1,s2s = (2a−2c−∆)2/18. s ( % Qs = (a−c)/2
CSss1+s2 = (a−c)2/8) % ( s ! *
* L(
(a−c)2
8 +(a−c)2
4 +(a−c+ ∆)2
16β ≥ (2a−2c−∆)2 18 +(a−c+ ∆)2
9 +(a−c+ 2∆)2
25β +(a−c−2∆)2
9 +(a−c−3∆)2 25β . +?,
! +?, * β * 0 β ≤ gsL1,L2(δ) * ! + ,)
( s ! * * L(
(a−c)2 1 8+1
4+ 1
9β ≥ (2a−2c−∆)2 18 +(a−c+ ∆)2
9 +(a−c+ ∆)2
16β +(a−c−2∆)2
9 +(a−c−3∆)2
16β . +$,
! +$, * β* 0 β≤gsL1+L2(δ)* ! + ,) *
* * L ! L *
! s) L ! 0 CSL =
(a−pL)QL/2 =γQ2L/2,* QL 0 L( ) L(
% QL= (2a−2c−∆)/3γ CSL1,L2L = (2a−2c−∆)2/18γ.
L ( % QL = (a−c)/2γ CSL1+L2L = (a−c)2/8γ) %
( L ! * * s(
(a−c)2
8γ +(a−c)2
4γ +(a−c+ ∆)2
16β ≥ (2a−2c−∆)2 18γ +(a−c+ ∆)2
9γ +(a−c+ 2∆)2
25β +(a−c−2∆)2
9γ +(a−c−3∆)2 25β . +6,
! +6, * β * ! β ≤ gLs1,s2(δ, γ) * ! + ,)
( L ! * * s(
(a−c)2 1 8γ + 1
4γ + 1
9β ≥(2a−2c−∆)2 18γ +(a−c+ ∆)2
9γ +(a−c+ ∆)2
16β +(a−c−2∆)2
9γ +(a−c−3∆)2
16β . +A,
! +A, * β* ! β≤gLs1+s2(δ, γ)* ! + !,) 4 , 5
" * 4 ;
) 3 * 3) 4 , 5
0 . 0 !
)
#3
( ( s+ , * (
* ( s+ ,) *
( ( L +
, * ( * ( L+ ,) <
! C m+ , n + ,
M+ , N + ,) <
0 ! 0 G2,γ J 0 0 6,(G2,γ))
0
s\L M N
m
(a−c) 8
+(a−c)4 +(a−c)9β ,
(a−c) 8γ
+(a−c)4γ +(a−c)9β
(a−c) 8
+(a−c)4 +(a−c+∆)16β ,
(2a−2c−∆) 18γ
+(a−c+∆) +(a−c−2∆) 9γ
+(a−c+∆) +(a−c−3∆) 16β
n
(2a−2c−∆) 18
+(a−c+∆) +(a−c−2∆) 9
+(a−c+∆) +(a−c−3∆)
16β ,
(a−c) 8γ
+(a−c)4γ +(a−c+∆)16β
(2a−2c−∆) 18
+(a−c+∆) +(a−c−2∆) 9
+(a−c+2∆) +(a−c−3∆)
25β ,
(2a−2c−∆) 18γ
+(a−c+∆) +(a−c−2∆) 9γ
+(a−c+2∆) +(a−c−3∆) 25β
- . ˆδ(γ) = 549−750γ63−50γ .
" (γ, δ) 0< γ ≤0.466 0.11475 < δ≤ˆδ(γ), gs1,s2L (δ, γ)<
gL1,L2s (δ)< gs1+s2L (δ, γ)< gL1+L2s (δ).
" δ= ˆδ(γ) gLs1,s2(δ, γ)< gsL1,L2(δ) =gLs1+s2(δ, γ)< gsL1+L2(δ).
" (γ, δ) 0< γ≤0.466 ˆδ(γ)≤δ≤0.1991, gs1,s2L (δ, γ)<
gs1+s2L (δ, γ)< gL1,L2s (δ)< gL1+L2s (δ).
" 0.466< γ <1, gs1,s2L (δ, γ)< gL1,L2s (δ)< gs1+s2L (δ, γ)< gsL1+L2(δ).
" γ= 1, gLs1,s2(δ, γ) =gsL1,L2(δ)< gLs1+s2(δ, γ) =gsL1+L2(δ).
- " / ˆδ(γ) 0 0 ! gL1,L2s (δ) =
gs1+s2L (δ, γ)* δ) *% 0< γ ≤ 0.466 0.11475< ˆδ(γ) ≤ 0.1991. % 0 < γ ≤ 0.466 ˆδ(γ) ≤ δ ≤ 0.1991% gs1+s2L (δ, γ) <
gL1,L2s (δ).5 * ! % 0< γ≤0.466 0.11475< δ≤ˆδ(γ), gsL1,L2(δ)<
gs1+s2L (δ, γ)) ( gs1+s2L (δ, γ) gsL1+L2(δ) gLs1+s2(δ, γ)
< gsL1+L2(δ) γ∈(0,1) gs1+s2L (δ, γ) =gL1+L2s (δ)* γ= 1. % ( gs1,s2L (δ, γ) gL1,L2s (δ) gLs1,s2(δ, γ) < gsL1,L2(δ) γ∈(0,1) gs1+s2L (δ, γ) =gL1+L2s (δ)* γ= 1. *
* + , +!,) 4 , 5
##
!" + , 0.466 ≤ γ ≤ 1 gs1+s2L (δ, γ) < β, 7 + !, gsL1,L2(δ)< gsL1+L2(δ)< β) ) 7 + , + ,
* gsL1,L2(δ)< gsL1+L2(δ)< β m
! s) % ! s n) gLs1+s2(δ, γ)< β,
7 + !, gLs1,s2(δ, γ)< β. ) 7 + ,
* gLs1,s2(δ, γ) < β 0 ! L
n N) % ! L N) % 0.466 ≤ γ ≤ 1
gs1+s2L (δ, γ)< β * ! 6,(G2,γ) = (n, N).
+ , 0.466≤γ≤1 gsL1,L2(δ)< β≤gs1+s2L (δ, γ), 7 + !, gLs1,s2(δ, γ)< gL1,L2s (δ)< β ≤gLs1+s2(δ, γ)< gL1+L2s (δ). gL1,L2s (δ)<
β < gsL1+L2(δ)% ) 7 + , 0
! s N n ) 7 + , 0
! s M m) gs1,s2L (δ, γ)< β≤gs1+s2L (δ, γ)% ) 7
+ , 0 ! L n N
) 7 + !, 0 ! L m
M) % (n, N) (m, M) - G2,γ * 0.466 ≤ γ ≤1 gL1,L2s (δ)< β≤gs1+s2L (δ, γ)) / - * !
s 0 * m n ! L .
0 * M N"
qs(a−c)2 1 8γ+ 1
4γ + 1
9β + (1−qs) (a−c)2
8γ +(a−c)2
4γ +(a−c+ ∆)2 16β
=qs
(2a−2c−∆)2
18γ +(a−c+ ∆)2+ (a−c−2∆)2 9γ
+qs
(a−c+ ∆)2+ (a−c−3∆)2
16β + (1−qs)(2a−2c−∆)2 18γ +(1−qs) (a−c+ ∆)2+ (a−c−2∆)2
9γ +(a−c+ 2∆)2+ (a−c−3∆)2
25β ,
* qs 0 0 ! s m) !
J qs* 0 +4,) ! L 0 * M
N ! s . 0 * m n) qL
0 0 ! L M) γ = 1 +4, *
0 +7,) % 0.466≤γ≤1 gsL1,L2(δ)< β≤gLs1+s2(δ, γ), * ! 6,(G2,γ) ={(n, N),(m, M),(qs, m;qL, M)}.
+ , 0.466 ≤ γ ≤ 1 β ≤ gsL1,L2(δ), 7 + !,
β < gsL1,L2(δ) < gsL1+L2(δ)) ) 7 + , + !, * β <
gL1,L2s (δ)< gL1+L2s (δ) n !
s) % ! s m) β ≤ gsL1,L2(δ),
7 + !, β < gs1+s2L (δ, γ). ) 7 + !, * β <
gs1+s2L (δ, γ) 0 ! L m M)
% ! L M) %6,(G2,γ) = (m, M) 0.466≤γ≤1
β≤gsL1,L2(δ). 4 , 5
#4
#" + , 0< γ <0.466 max{gLs1+s2(δ, γ), gL1,L2s (δ)}
< β, 7 + , + , gLs1,s2(δ, γ) < gLs1+s2(δ, γ) < β) ) 7 + , + !, * gLs1,s2(δ, γ) < gs1+s2L (δ, γ) < β M
! L) gsL1,L2(δ) < β, ) 7
+ , 0 ! s N n) %
6,(G2,γ) = (n, N) 0.466≤γ≤1 max{gLs1+s2(δ, γ), gL1,L2s (δ)}< β.
+ , 0 < γ < 0.466 gLs1+s2(δ, γ) ≤ β ≤ gsL1,L2(δ)% 7 + , gs1,s2L (δ, γ) < gLs1+s2(δ, γ) ≤ β ≤ gL1,L2s (δ) < gL1+L2s (δ). ) 7 + , + !, * gs1,s2L (δ, γ) < gs1+s2L (δ, γ) ≤ β M
! L) ) 7 + , + ,
* β ≤ gL1,L2s (δ) < gL1+L2s (δ) n
! s) % 6,(G2,γ) = (m, N) 0 < γ < 0.466 gs1+s2L (δ, γ)≤β≤gL1,L2s (δ). + , + !,
+ , + , ) ?) 4 , 5
%" . 0.794≤γ≤1.
+ ," 0< β≤fsL1+L2(δ) NE(F2,γ) =N E(G2,γ) = (n, N)#
+ , " max{fLs1,s2(δ, γ), gs1+s2L (δ, γ)} ≤ β ≤ 1 N E(F2,γ) = (m, M) =
(n, N) =N E(G2,γ)#
+ ," 0< β≤min{gsL1,L2(δ),1} N E(F2,γ) =N E(G2,γ) = (m, M)
%" * # ?)4 , 5
'" . 0.466≤γ <0.794.
+ , " 0 < β ≤ min{fsL1+L2(δ), fLs1,s2(δ, γ)} N E(F2,γ) = N E(G2,γ) = (n, N)#
+ , " fLs1,s2(δ, γ) ≤ β ≤ fsL1+L2(δ) NE(F2,γ) = (n, M) = (n, N) =
NE(G2,γ)#
+ ," max {fsL1+L2(δ), fLs1,s2(δ, γ), gLs1+s2(δ, γ)} ≤β≤1 N E(F2,γ) = (m, M) = (n, N) =N E(G2,γ)#
+ ," 0< β≤min{gsL1,L2(δ),1} NE(F2,γ) =NE(G2,γ) = (m, M)
'" * 4 ?)4 , 5
*" . 0< γ <0.466.
+ , " 0 < β ≤ min{fsL1+L2(δ), fLs1,s2(δ, γ)} N E(F2,γ) = N E(G2,γ) = (n, N)#
+ , " fLs1,s2(δ, γ) ≤ β ≤ fsL1+L2(δ) NE(F2,γ) = (n, M) = (n, N) =
NE(G2,γ)#
+ , " max{fsL1+L2(δ), fLs1,s2(δ, γ), gLs1+s2(δ, γ), gL1,L2s (δ)} ≤ β ≤ 1 NE(F2,γ) = (m, M) = (n, N) =NE(G2,γ)#
+ , " gLs1+s2(δ, γ) < β ≤ gL1,L2s (δ) N E(F2,γ) = (m, M) = (m, N) =
NE(G2,γ)#
+ ," 0< β ≤min{gL1,L2s (δ), gLs1+s2(δ, γ),1} NE(F2,γ) =N E(G2,γ) = (m, M)
*" * 4 $)4 , 5
#7