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1 A Recursive Dynamic Computable General Equilibrium Model For ...

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Rearrange (B14) in terms of v i,j,k gives:<br />

= σ σλ<br />

(B15)<br />

v i,<br />

j,<br />

k − ri<br />

, j,<br />

k + + x j,<br />

k<br />

where σ is the elasticity of substitution between all pairwise types of primary factors (i.e.<br />

labour, capital) in the value added nest:<br />

1<br />

σ = (B16)<br />

1+<br />

ρ<br />

substituting (B15) into (B11) and rearranging in terms of σλ yields:<br />

n<br />

∑<br />

i=<br />

1<br />

σλ = σ S r<br />

(B17)<br />

i,<br />

j,<br />

k i,<br />

j,<br />

k<br />

Substituting (B17) into (B15) eliminates the percentage change Lagrangian variable λ.<br />

Factorising the resulting expression gives linearised CES Hicksian primary factor demands:<br />

v<br />

n ⎡<br />

= x j,<br />

k − ⎢ri<br />

, j,<br />

k −∑<br />

S<br />

⎣ i=<br />

r<br />

i,<br />

j,<br />

k σ i,<br />

j,<br />

k i,<br />

j,<br />

k<br />

(B18)<br />

1<br />

<strong>For</strong> consistent aggregation expression (B19) must hold:<br />

n<br />

U j,<br />

k X j,<br />

k ∑ Ri,<br />

j,<br />

kVi,<br />

j,<br />

k<br />

i=<br />

1<br />

⎤<br />

⎥<br />

⎦<br />

= (B19)<br />

By linearising (B19), substituting (B11) and rearranging, it is possible to derive the<br />

percentage change in the composite price in the value added nest as:<br />

n<br />

u j,<br />

k ∑ Si,<br />

j,<br />

k ri<br />

, j,<br />

k<br />

i=<br />

1<br />

= (B20)<br />

Further substitution of (B20) into (B18) gives a simplified version of the linearised<br />

Hicksian demand function:<br />

59

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