Interleaving: Difference between revisions
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=> '''δ''' - '''V''' = ‖''w''‖ = ‖''s''‖ - '''δ''' - '''W''' | => '''δ''' - '''V''' = ‖''w''‖ = ‖''s''‖ - '''δ''' - '''W''' | ||
=> 2'''δ''' + '''W''' = ‖''s''‖ + '''V''' | => 2'''δ''' + '''W''' = ‖''s''‖ + '''V'''. If this linear relation is trivial, the third letter '''U''' occurs an even number of times in ''s'' | ||
== Generalizations == | == Generalizations == | ||