Galois coverings, Morita equivalence and smash extensions of categories over a field.
Cibils, Claude, Solotar, Andrea (2006)
Documenta Mathematica
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Cibils, Claude, Solotar, Andrea (2006)
Documenta Mathematica
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Muhly, Paul S., Tomforde, Mark (2004)
Documenta Mathematica
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Burns, David, Flach, Matthias (2007)
Documenta Mathematica
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Burns, David (2004)
Documenta Mathematica
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De Felice, Antonio, Tsujikawa, Shinji (2010)
Living Reviews in Relativity [electronic only]
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Exel, Ruy (2011)
The New York Journal of Mathematics [electronic only]
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Ringström, Hans (2010)
Living Reviews in Relativity [electronic only]
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Mariana Hadzhilazova, Ivaïlo M. Mladenov, John Oprea (2007)
Archivum Mathematicum
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In this paper we consider non-compact cylinder-like surfaces called unduloids and study some aspects of their geometry. In particular, making use of a Kenmotsu-type representation of these surfaces, we derive explicit formulas for the lengths and areas of arbitrary segments, along with a formula for the volumes enclosed by them.
Carroll, Sean M. (2001)
Living Reviews in Relativity [electronic only]
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Zeilberger, Doron (1997)
The Electronic Journal of Combinatorics [electronic only]
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