QCSP on Partially Reflexive Cycles - The Wavy Line of Tractability
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چکیده
We study the (non-uniform) quantified constraint satisfaction problem QCSP(H) as H ranges over partially reflexive cycles. We obtain a complexity-theoretic dichotomy: QCSP(H) is either in NL or is NP-hard. The separating conditions are somewhat esoteric hence the epithet “wavy line of tractability” (see Figure 5 at end).
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تاریخ انتشار 2013