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que son inverse ?[ ] (notée W) qui jouent des rôles importants pour les calculs : M:=Transpose(VandermondeMatrix(<e ,
On construit ses coefficients ? [k,s] p,q (notés Omega[k,s][p,q]) un par un ,
on calcule sa courbure en utilisant les procédures introduites plus haut ,
x,y),x)+diff(e[i] (x,y)^2,y)): delta[2,0][3,i]:=e[i](x,y)^2*diff(e[i](x,y),x,x)+diff(aa[i],y)+diff(e[i](x,y) ,x)*aa[i]: end do: LL[3] ,
On construit ces coefficients ? [k,s] p,q (notés Omega[k,s][p,q]) un par un, avec les lignes de commandes suivantes : for p from 3 to 5 do for q from 3 to 5 do Omega[0,0][p-1,q-1]:=add(e[k](x,y)^(p-1)*(Theta[1,0], y)^(p-1)*(DX+e[k](x,y)*DY)*W[k,r]*L[1,0] [r-1,q-1],r=2..3),k=1..5): end do: end do ,
=0: Omega[0,1][4,3]:=-sigma[2]*DY: Omega[0,1][4,4]:=DX+sigma[1]*DY: Omega[0,2][4,4]:=0 : for p from 4 to 5 do for q from 4 to 5 do Omega, k=1..5): end do: end do: for p from 4 to 5 do for q from 3 ,
=DY: Omega[1,2][4,4]:=DX+sigma[1]*DY: for q from 3 to 5 do Omega ,
on calcule sa courbure en utilisant les procédures introduites plus haut : COURBUREPANTAZI:=simplify(matadd(DIFEXTMATRIX(MATRICEPANTAZI),WEDGE MATRIX(MATRICEPANTAZI,MATRICEPANTAZI))) ,
définie en 5.1.1.2 ` a l'aide de la procédure suivante : for s from 0 to n-2 do LL[n,s]:=0: end do ,
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