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arxiv: 1008.5299 · v2 · pith:GEP3UUB3new · submitted 2010-08-31 · 🧮 math.CO

On the inverse image of pattern classes under bubble sort

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keywords patternbubbleclassimageinversesortunderanswer
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Let B be the operation of re-ordering a sequence by one pass of bubble sort. We completely answer the question of when the inverse image of a principal pattern class under B is a pattern class.

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