#include <triqs/gfs/gf_sym_grp.hpp>

Detailed Description

Symmetry concept for scalar-valued Green's functions.

A ScalarGfSymmetry accepts a mesh index and returns a new mesh index together with the residual nda::operation to be applied to the data.

Template Parameters

F	Anything callable with a mesh_index_t.
G	Anything modeling the gf concept (with target_rank == 0).
mesh_index_t	Mesh index type for G.

Definition at line 57 of file gf_sym_grp.hpp.

Concept definition

template<typename F, typename G, typename mesh_index_t typename G::mesh_t::index_t>
concept triqs::gfs::ScalarGfSymmetry =  is_gf_v<G> and 
     requires(F f, mesh_index_t const &mesh_index) {
       requires(G::target_rank == 0);
       { f(mesh_index) } -> std::same_as<std::tuple<mesh_index_t, nda::operation>>;
     }