Hasse-Witt-Invariants and Dihedral Extension.
Hans-Georg Rück (1986)
Mathematische Zeitschrift
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Hans-Georg Rück (1986)
Mathematische Zeitschrift
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Ib Madsen, Wolfgang Lück (1990)
Mathematische Zeitschrift
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Robert C. Valentini (1987)
Mathematische Zeitschrift
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Murray Schacher, Burton Fein (1978)
Mathematische Zeitschrift
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Murray Schacher, Burton Fein (1977)
Mathematische Zeitschrift
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Hans-Bert Rademacher (1989)
Mathematische Zeitschrift
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Georgia Visnjic Triantafillou (1983)
Mathematische Zeitschrift
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Roland Schwänzl (1982)
Mathematische Zeitschrift
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Yuka Kotorii (2014)
Fundamenta Mathematicae
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We define finite type invariants for cyclic equivalence classes of nanophrases and construct universal invariants. Also, we identify the universal finite type invariant of degree 1 essentially with the linking matrix. It is known that extended Arnold basic invariants to signed words are finite type invariants of degree 2, by Fujiwara's work. We give another proof of this result and show that those invariants do not provide the universal one of degree 2.
Ib Madsen, Wolfgang Lück (1990)
Mathematische Zeitschrift
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Christian Okonek (1982)
Mathematische Zeitschrift
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Albert A. Cuoco (1982)
Mathematische Zeitschrift
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Sheng-Li Tan (1996)
Mathematische Zeitschrift
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Dirk FERUS, Franz Pedit (1990)
Mathematische Zeitschrift
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James E. McClure (1983)
Mathematische Zeitschrift
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John Douglas Moore, Roger Schlafly (1980)
Mathematische Zeitschrift
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