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begin thorn EMScript
begin variables
El_i B_i CEl CB rho
end variables
begin temporaries
sigma
end temporaries
begin calculation EM_initial scheduled at initial
sigma = 1
El1 = sigma*cos(2*PI*(x + y))
El2 = -1*(1 - sigma)*cos(2*PI*x) - sigma*cos(2*PI*(x + y))
El3 = 0
B1 = 0
B2 = 0
B3 = (1 - sigma)*cos(2*PI*x) + sigma*cos(2*PI*(x + y))
end calculation
begin calculation EM_evol scheduled at MoL_CalcRHS
D_t El_a = Eps_abc * Euc^be * Euc^cf * D_e B_f
D_t B_a = -1*Eps_abc * Euc^be * Euc^cf * D_e El_f
end calculation
begin calculation EM_constraints scheduled at analysis
CEl = D_b El_a * Euc^ab
CB = D_b B_a * Euc^ab
end calculation
begin calculation EM_energy scheduled at analysis
rho = Euc^ab * El_a * El_b/2 + Euc^ab * B_a * B_b/2
end calculation
end thorn
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