Eric Culf, Kieran Mastel, Connor Paddock, Taro Spirig. The Quantum Smooth Label Cover Problem Is Undecidable. In Sayan Bhattacharya, Danupon Nanongkai, Michael Benedikt, Gabriele Puppis, editors, 53rd International Colloquium on Automata, Languages, and Programming, ICALP 2026, Royal Holloway, University of London, Egham, United Kingdom, July 7-10, 2026. Volume 374 of LIPIcs, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2026. [doi]
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