Stack-number is not bounded by queue-number

11/09/2020 ∙ by Vida Dujmovic, et al. ∙ 0

We describe a family of graphs with queue-number at most 4 but unbounded stack-number. This resolves open problems of Heath, Leighton and Rosenberg (1992) and Blankenship and Oporowski (1999).

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