Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Sparseness of the matrix J in Eq. (8). (a) Nodes neighboring the reference node (green) and two nodes away from the reference node (orange) in a lattice graph. (b) Sparseness \(S_{J}(L)\) of Eq. (13) for different numbers of intersections L.