Superfixed positions in the geometry of Goursat flags.
Mormul, Piotr (2002)
Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica
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Mormul, Piotr (2002)
Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica
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Shyuichi Izumiya (1993)
Colloquium Mathematicae
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A characterization of systems of first order differential equations with (classical) complete solutions is given. Systems with (classical) complete solutions that consist of hyperplanes are also characterized.
Piotr Jaworski (2000)
Annales Polonici Mathematici
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It is well known that versal deformations of nonsimple singularities depend on moduli. However they can be topologically trivial along some or all of them. The first step in the investigation of this phenomenon is to determine the versal discriminant (unstable locus), which roughly speaking is the obstacle to analytic triviality. The next one is to construct continuous liftable vector fields smooth far from the versal discriminant and to integrate them. In this paper we extend the results...
Aleksey Davydov (1995)
Banach Center Publications
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Christer O. Kiselman (1994)
Annales Polonici Mathematici
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We study the singularities of plurisubharmonic functions using methods from convexity theory. Analyticity theorems for a refined Lelong number are proved.
K. Spallek (1991)
Annales Polonici Mathematici
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A differentiable group is a group in the category of (reduced and nonreduced) differentiable spaces. Special cases are the rationals ℚ, Lie groups, formal groups over ℝ or ℂ; in general there is some mixture of those types, the general structure, however, is not yet completely determined. The following gives as a corollary a first essential answer. It is shown, more generally,that a locally compact topological transformation group, operating effectively on a differentiable space X (which...
Borzellino, Joseph E., Brunsden, Victor (2003)
Journal of Lie Theory
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Eida, A. (2001)
Bulletin. Classe des Sciences Mathématiques et Naturelles. Sciences Mathématiques
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Nhu Nguyen, Katsuro Sakai (1996)
Colloquium Mathematicae
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Boonpok, Chawalit (2009)
Acta Universitatis Apulensis. Mathematics - Informatics
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