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https://open.uns.ac.rs/handle/123456789/3302
Nаziv: | Quantified constraint satisfaction problem on semicomplete digraphs | Аutоri: | Đapić, Petar Marković, Petar Martin B. |
Dаtum izdаvаnjа: | 1-апр-2017 | Čаsоpis: | ACM Transactions on Computational Logic | Sažetak: | © 2017 ACM. We study the (non-uniform) quantified constraint satisfaction problem QCSP(ℋ)asH ranges over semicomplete digraphs. We obtain a complexity-theoretic trichotomy: QCSP(ℋ) is either in P, is NP-complete, or is Pspace-complete. The largest part of our work is the algebraic classification of precisely which semicomplete digraphs enjoy only essentially unary polymorphisms, which is combinatorially interesting in its own right. | URI: | https://open.uns.ac.rs/handle/123456789/3302 | ISSN: | 15293785 | DOI: | 10.1145/3007899 |
Nаlаzi sе u kоlеkciјаmа: | PMF Publikacije/Publications |
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