"Chemists use graph isomorphism testing algorithms to ... be the case when the theory says it can take exponential time?" ...

or the A* graph traversal algorithm is used, but the reality is that although these pure graph theory algorithms are decidedly influential, they cannot be applied verbatim to the reality of graph ...

or the A* graph traversal algorithm is used, but the reality is that although these pure graph theory algorithms are decidedly influential, they cannot be applied verbatim to the reality of graph ...

Using subgraph isomorphism algorithms from graph theory, the circuit is partitioned into several smaller sub-circuits, each containing no more qubits than the current quantum computer's capacity ...