Hello everyone,
I'm trying to define a completely antisymmetric tensor with six
indices, the Levi-Civita tensor in six dimensions, but without
success.
I followed the instructions of the manual but did not work.
I tried the following:
int main()
{
varidx xi_1(symbol("\\xi_1"),6), xi_2(symbol("\\xi_2"),6),
xi_3(symbol("\\xi_3"),6), xi_4(symbol("\\xi_4"),6),
xi_5(symbol("\\xi_5"),6), xi_6(symbol("\\xi_6"),6);
symbol epsilon("varepsilon");
ex gamma_7 = indexed(epsilon, sy_anti(0,1,2,3).add(4).add(5),
xi_1, xi_2, xi_3, xi_4, xi_5, xi_6)
*dirac_gamma(xi_1.toggle_variance())*dirac_gamma(xi_2.toggle_variance())
*dirac_gamma(xi_3.toggle_variance())*dirac_gamma(xi_4.toggle_variance())
*dirac_gamma(xi_5.toggle_variance())*dirac_gamma(xi_6.toggle_variance());
return 0;
}
Anyone have any tips?
Best regards,
Gilson.