Graph theory is a branch of mathematics that studies ... extended supergrid graphs has revealed that these problems are NP-complete, indicating that they are computationally challenging.

but the reality is that although these pure graph theory algorithms are decidedly influential, they cannot be applied verbatim to the reality of graph traversal between destinations in the ...

often used in spectral graph theory. Multiplex networks: Networks that consist of multiple layers or types of connections, allowing for complex interactions between different types of nodes.