Chemistry Reference
In-Depth Information
0.6
x 1
0.1
0.6
x 2
0.1
0
a 2
1
Fig. 3.7 Example 3.4; discrete time oligopoly with isoelastic demand and linear cost functions -
the semi-symmetric case. Bifurcation diagrams of outputs x 1 ;x 2 with respect to a 2 with the number
of firms held fixed at N
D
23. The parameters are otherwise as in Fig. 3.6
1 a 1 a 1 2.N 1/
.N 1/
! ;
p 5.N 1/x 2
J .2/
D
1 a 2
0
1 a 1 0
01
;
J .3/
D
a 2
and
! :
1 a 1
0
a 2 p 2
2/x 2 1 1 a 2 C .N 2/a 2 p 2
2/x 2 1
J .4/
D
p 3Œx 1 C
p 3Œx 1 C
.N
.N
D
.1/ and
D
.4/ may we have points at which the Jacobian
Notice that only in regions
determinant vanishes.
After the foregoing preparations, we are now in a position to describe some bor-
der collision bifurcations as well as some methods to bound chaotic attractors that
involve the lines of non-differentiability for a specific numerical example. Let us
start from the set of parameters used to obtain the bifurcation diagram Fig. 3.7, that
is N D 23, A D 16, a 1 D 0:4, c 1 D 5, c 2 D 6, L 1 D L 2 D 2. From the second sta-
bility condition in (3.15) we can deduce that at a 2 D
21120
127781 ' 0:165 the Nash
equilibrium x loses stability through a flip bifurcation, at which it becomes a saddle
point, and a stable cycle of period 2 is created around it. Just after this bifurcation,
 
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