• BoundaryCondition2D_For_MatrixId() : GMathLib::GDiff_Util
• CentralDiff1D() : GMathLib::GDiff_Util
• Diff_2Times1D() : GMathLib::GDiff_Util
• Identity_Matrix() : GMathLib::GMatrix_Util
• Puts() : GMathLib::IO::GError_Output
• Write() : GMathLib::IO::GStd_Output