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[文献書誌] I.Inata, Y.Kobayashi: "Monoids with subgroups of finite index and the Braid inverse monoid"Scientcal Mathematical Japoncoe. 57・1. 1-7 (2003)
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[文献書誌] M.Katoura, Y.Kobayashi: "Undecidable properties of monoids with word problem solvable in linear time"Theoretical Computer Science. 290. 1301-1316 (2003)
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[文献書誌] M.Katoura, Y.Kobayashi, F Otto: "Undecidable properties of monoids with word problem solvable in linear time, Part II"Theoretical Computer Science. 301. 79-101 (2003)
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[文献書誌] Y.Kobayashi, F.Otto: "For fiitly presented monodies the homological finiteness conditions FHT and bi-FP3 coincide"Journal of Algebra. 264. 327-341 (2003)
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[文献書誌] Y.Umezu: "Projective models of Enrique surfaces and the in Enriques lattice"Proc. 7th Symposium on Algebra, Language and Computation. 79-85 (2004)
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[文献書誌] Y.Kobayashi, I.Takeuchi: Proceedings of the seventh Symposium on Algebra, Languages and Computation. 119 (2004)