# Dear All, Presently the method get_dummy_indices() has a non-intuitive behaviour that it forgets about variance of indices and return all of them dotted. This is illustrated by the test included after the signature. This can be altered in many they and include a patch to idx.cpp which uses a sorting rule indifferent to variance of indices. If this patch is applied than a small simplification to clifford.cpp can be done as well. Best wishes, Vladimir -- Vladimir V. Kisil email: kisilv@maths.leeds.ac.uk -- www: http://maths.leeds.ac.uk/~kisilv/ ##include <iostream> ##include <ginac/ginac.h> using namespace std; using namespace GiNaC; int main() { varidx mu(symbol("mu"), 4); varidx nu(symbol("nu"), 4, true); symbol A("A"); symbol B("B"); ex e = indexed(A, nu, mu); ex e1 = indexed(B, nu.toggle_variance(), mu.toggle_variance()); lst rl = lst(mu, nu); cout << rl << endl; // -> {~mu,.nu} exvector ind_vec = ex_to<indexed>(e).get_dummy_indices(ex_to<indexed>(e1)); for (exvector::const_iterator it = ind_vec.begin(); it != ind_vec.end(); it++) { cout << ex_to<varidx>(*it) << endl; // -> .nu .mu } return 0; } #