multiplet_analysis()
Solver
green_high_frequency_moments()
sigma_high_frequency_moments()
tail_fit()
block_size_from_gf_struct()
estimate_nfft_buf_size()
orbital_occupations()
Solver.solve_parameters
Solver.constr_parameters
Two-particle Green’s function \(G^{(2)}(i\omega,i\nu,i\nu')\) in the ph-channel (one bosonic matsubara and two fermionic)