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A loop is discontinuous when a single node does not comply with the rules defined for that loop.

The following image illustrates the concept:


This loop has 2 simple rules:

  • Each red link must be followed by a blue link.
  • Each blue link must be followed by a red link.

When we close the loop at node A, we can see that these rules are not obeyed by node A. It has two red links. Therefore, this is a discontinuous loop, with node A being the discontinuity. There can only be a single discontinuity in a discontinuous loop. A loop that violates the rules at multiple locations is not a valid loop.

See Also