By flipping edges as in Claim A.71, we can assume without loss of generality that the vertex on the left side has supercolourAand the vertex on the right side has supercolourB

Suppose now that the two witness vertices have different supercolours,AandB, but these supercolours are entangled, with the corresponding orientation being A→B

1 Pith paper cite this work. Polarity classification is still indexing.

1 Pith paper citing it