Charbit, Pierre; Jeandel, Emmanuel; Koiran, Pascal; Perifel, Sylvain; Thomassé, Stéphan Finding a vector orthogonal to roughly half a collection of vectors. (English) Zbl 1140.65033 J. Complexity 24, No. 1, 39-53 (2008). Reviewer: Răzvan Răducanu (Iaşi) MSC: 65F30 65Y05 65F25 65Y20 PDF BibTeX XML Cite \textit{P. Charbit} et al., J. Complexity 24, No. 1, 39--53 (2008; Zbl 1140.65033) Full Text: DOI
Derksen, Harm; Jeandel, Emmanuel; Koiran, Pascal Quantum automata and algebraic groups. (English) Zbl 1124.81004 J. Symb. Comput. 39, No. 3-4, 357-371 (2005). MSC: 81P68 68Q45 20G15 PDF BibTeX XML Cite \textit{H. Derksen} et al., J. Symb. Comput. 39, No. 3--4, 357--371 (2005; Zbl 1124.81004) Full Text: DOI
Blondel, Vincent D.; Jeandel, Emmanuel; Koiran, Pascal; Portier, Natacha Decidable and undecidable problems about quantum automata. (English) Zbl 1078.81012 SIAM J. Comput. 34, No. 6, 1464-1473 (2005). MSC: 81P68 68Q45 PDF BibTeX XML Cite \textit{V. D. Blondel} et al., SIAM J. Comput. 34, No. 6, 1464--1473 (2005; Zbl 1078.81012) Full Text: DOI